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1 April RFC



IETF RFC 839

Who talks TCP?

Last modified on Wednesday, September 23rd, 1992

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Network Working Group                                    D. Smallberg
Request for Comments:  839                               January 1983


			   Who Talks TCP?

The list of hosts was taken from the NIC hostname table of 31-Dec-82.
The tests were run on 25-Jan-83 from ~10:00 am to ~6:30 pm PST.
Dead, refused, and unreachable hosts were retried 26-Jan-83 from ~8:00 am
     to ~6:10 pm PST.

Claims are taken from the NIC host table:
	T = tcp (no particular services mentioned)
	t = tcp/telnet
	f = tcp/ftp
	s = tcp/smtp

Results for each service:
	blank (not accepted)
	refused
	unreachable
	dead
	accepted
	accepted+ (FTP allowed user anonymous, password guest)

Summary information:

   Telnet                             Result

		no telnet   unreachable   refused   dead   accepted
	      +-----------+-------------+---------+------+------------+
C  tcp/telnet |      9    |       6     |     2   |  20  |    110     | 147
l             +-----------+-------------+---------+------+------------+
a  tcp        |      7    |       1     |     0   |   3  |     16     |  27
i             +-----------+-------------+---------+------+------------+
m  Nothing    |     58    |       4     |     1   |  30  |     56     | 149
	      +-----------+-------------+---------+------+------------+----
		    74           11           3      53       182     | 323


   FTP                                Result
							   accepted or
	       no tcp/ftp   unreachable   refused   dead   accepted+
	      +-----------+-------------+---------+------+------------+
C  tcp/ftp    |     10    |       6     |     2   |  18  |     84     | 120
l             +-----------+-------------+---------+------+------------+
a  tcp        |      8    |       1     |     2   |   3  |     13     |  27
i             +-----------+-------------+---------+------+------------+
m  Nothing    |     64    |       4     |     8   |  32  |     68     | 176
	      +-----------+-------------+---------+------+------------+----
		    82           11          12      53       165     | 323





Page 1


SMTP Result no tcp/smtp unreachable refused dead accepted +-----------+-------------+---------+------+------------+ C tcp/smtp | 2 | 6 | 1 | 19 | 82 | 110 l +-----------+-------------+---------+------+------------+ a tcp | 9 | 1 | 2 | 3 | 12 | 27 i +-----------+-------------+---------+------+------------+ m Nothing | 76 | 4 | 10 | 31 | 65 | 186 +-----------+-------------+---------+------+------------+---- 87 11 13 53 159 | 323 Results in alphabetical order: Name Address Claims Telnet FTP SMTP ---- ------- ------ ------ --- ---- acc 10.2.0.54 ---- d e a d ada-vax 10.0.0.52 ---- accepted accepted accepted aerospace 10.2.0.65 T--- accepted accepted accepted afgl 10.1.0.66 ---- accepted accepted afsc-ad 10.0.0.53 T--- accepted accepted afsc-dev 10.2.0.53 ---- accepted accepted afsc-hq 10.0.0.67 ---- afsc-sd 10.0.0.65 ---- afwl 10.0.0.48 ---- accepted accepted aids-unix 10.3.0.56 ---- u n r e a c h a b l e alta-coma 3.1.0.50 T--- ames-tss 10.0.0.16 ---- accepted accepted accepted ames-vmsb 10.3.0.16 ---- anl 10.0.0.55 ---- anl-mcs 10.1.0.55 ---- accepted accepted accepted arpa-dms 10.0.0.28 ---- d e a d arpa-png11 10.3.0.28 ---- bbn-admin 3.1.0.6 -tfs accepted accepted accepted bbn-cd 3.3.0.9 -tfs accepted accepted accepted bbn-clxx 10.2.0.71 -tfs u n r e a c h a b l e bbn-inoc 10.2.0.82 ---- bbn-inoc 3.2.0.6 -tfs accepted accepted accepted bbn-noc 3.1.0.14 -tfs accepted accepted accepted bbn-noc2 10.6.0.82 -tfs accepted accepted accepted bbn-nu 10.0.0.72 ---s bbn-rsm 10.4.0.82 -t-- accepted bbn-tenexb 10.0.0.49 -t-- accepted accepted+ accepted bbn-tenexc 10.3.0.49 -t-- accepted refused accepted bbn-unix 10.1.0.72 ---- accepted accepted accepted bbn-unix 3.1.0.4 -tfs accepted accepted accepted bbn-vax 10.1.0.82 -tfs accepted accepted accepted bbna 10.3.0.5 -tf- accepted accepted accepted bbncca 3.0.0.2 -tfs accepted accepted accepted bbnccb 3.1.0.2 -tfs accepted accepted accepted bbnccc 3.2.0.2 -tfs accepted accepted accepted Page 2

bbnccd 3.3.0.2 -tfs accepted accepted accepted bbnccf 3.0.0.4 -tfs accepted accepted accepted bbncci 3.3.0.4 -tfs accepted accepted accepted bbnf 10.0.0.5 -tf- accepted accepted accepted bbng 10.1.0.5 -tf- accepted accepted accepted bbnp 10.2.0.72 -tfs accepted accepted accepted bbnq 3.2.0.7 -tfs accepted accepted accepted bbns 10.3.0.82 -tfs accepted accepted accepted bbnt 10.0.0.82 ---- accepted accepted accepted bbnt 3.1.0.7 -tfs accepted accepted accepted bbnt 3.3.0.7 -tfs accepted accepted accepted bbnw 3.3.0.6 -tfs accepted accepted accepted bbnx 3.0.0.8 -tfs accepted accepted accepted bbny 3.2.0.8 -tfs accepted accepted accepted bnl 10.1.0.58 ---- d e a d bragg-sta1 10.1.0.38 -t-- d e a d brl 10.0.0.29 ---- accepted accepted accepted brl-bmd 10.3.0.29 ---- accepted accepted refused cca-unix 10.0.0.31 ---- u n r e a c h a b l e cca-vms 10.1.0.31 T--- u n r e a c h a b l e cctc 10.0.0.20 -t-- d e a d centacs-mmp 10.0.0.60 ---- d e a d centacs-tf 10.3.0.60 ---- d e a d cincpacflt-wm 10.1.0.36 ---- cit-20 10.0.0.54 T--- accepted accepted accepted cit-750 192.5.7.3 -tfs u n r e a c h a b l e cit-vax 10.1.0.54 -tfs accepted accepted accepted clarksburg-expak 8.0.0.4 ---- clarksburg-monitor 8.0.0.44 ---- d e a d cmu 128.2.254.255 ---s d e a d cmu-cs-a 10.1.0.14 -t-s accepted accepted accepted cmu-cs-b 10.0.0.14 ---- cmu-cs-c 10.3.0.14 ---- accepted accepted+ accepted cmu-cs-cad 128.2.254.133 -tfs accepted accepted accepted cmu-cs-g 128.2.254.132 -tfs accepted accepted accepted cmu-cs-gandalf 128.2.254.140 -tfs accepted accepted accepted cmu-cs-ius 128.2.254.128 -tfs accepted accepted accepted cmu-cs-j 128.2.254.144 -tfs d e a d cmu-cs-k 128.2.254.136 -tfs d e a d cmu-cs-ps 128.2.254.130 ---- d e a d cmu-cs-pt 128.2.254.155 -tfs accepted accepted accepted cmu-cs-speech 128.2.254.145 -tfs accepted accepted accepted cmu-cs-spice 128.2.254.139 -tfs accepted accepted accepted cmu-cs-unh 128.2.254.150 -tfs accepted accepted accepted cmu-cs-vlsi 128.2.254.129 -tfs accepted accepted accepted cmu-cs-zog 128.2.254.131 -tfs accepted accepted accepted cmu-ri-fas 128.2.254.138 -tfs accepted accepted accepted cmu-ri-isl 128.2.254.143 -tfs accepted accepted accepted cmu-ri-isl2 128.2.254.152 -tfs accepted accepted accepted cmu-ri-leg 128.2.254.141 -tfs d e a d coins-gateway 10.1.0.57 ---- coins-tas 10.0.0.36 ---- collins-gw 10.1.0.46 T--- Page 3

collins-pr 10.0.0.46 T--- d e a d compion 10.1.0.12 ---- accepted refused refused compion-vms 10.0.0.12 ---s accepted accepted accepted cornell 10.3.0.96 -tfs accepted accepted accepted csnet-cic 3.0.0.14 -tfs accepted accepted accepted csnet-purdue 128.10.0.2 -tfs accepted accepted accepted csnet-sh 10.1.0.94 ---- accepted accepted+ accepted csnet-sh 192.5.2.3 T--- accepted accepted+ accepted dca-ems 10.4.0.20 ---- accepted accepted accepted dcn1 128.4.0.1 -tfs accepted accepted+ accepted dcn2 128.4.0.2 -tfs accepted accepted+ accepted dcn3 128.4.0.3 -tfs accepted accepted+ accepted dcn4 128.4.0.4 -tfs d e a d dcn5 128.4.0.5 -tfs accepted accepted+ accepted dcn6 128.4.0.6 -tfs accepted accepted+ accepted dcn7 128.4.0.7 -tfs d e a d dcn8 128.4.0.8 -tfs d e a d dcn9 128.4.0.9 -tfs d e a d dec-2136 10.0.0.79 T--- d e a d dec-marlboro 10.1.0.79 T--- accepted accepted accepted dfvlr1 128.7.0.1 -tfs u n r e a c h a b l e dfvlr2 128.7.0.2 -tfs u n r e a c h a b l e dfvlr3 128.7.0.3 -tfs u n r e a c h a b l e dfvlr7 128.7.0.7 -tfs u n r e a c h a b l e dtnsrdc 10.0.0.81 ---- accepted accepted accepted edn-host1 21.1.0.1 -tfs d e a d edn-unix 10.3.0.20 -tfs accepted accepted etac 10.0.0.59 ---- d e a d etam-expak 4.0.0.1 ---- etam-monitor 4.0.0.41 ---- fnoc 10.1.0.33 ---- d e a d fnoc-secure 10.3.0.33 ---- ford-ecc 128.5.0.11 -tfs accepted accepted+ accepted ford-eed 128.5.0.14 -tfs accepted accepted+ accepted ford-ers 128.5.0.13 -tfs accepted accepted+ accepted ford-foe 128.5.0.15 -tfs d e a d ford-lab 128.5.0.8 -tfs accepted accepted+ accepted ford-res 128.5.0.10 -tfs d e a d ford-srl 128.5.0.12 -tfs d e a d ford-vax 128.5 .0.9 -tfs d e a d ford-wdl1 128.5.32.1 -tfs accepted accepted accepted ford-wdl2 128.5.32.2 -tfs d e a d ford-wdl3 128.5.32.3 -tfs d e a d ford-wdl4 128.5.32.4 -tfs d e a d ford-wdl5 128.5.32.5 -tfs d e a d ford-wdl6 128.5.32.6 -t-- accepted accepted accepted ford1 128.5.0.1 -tfs accepted accepted+ accepted ford2 128.5.0.2 -tfs accepted accepted+ accepted ford3 128.5.0.3 -tfs accepted accepted+ accepted ford4 128.5.0.4 -tfs accepted accepted+ accepted fucino 4.0.0.88 ---- fucino-expak 4.0.0.95 ---- fucino-monitor 4.0.0.94 ---- goonhilly-expak 4.0.0.2 ---- Page 4

goonhilly-monitor 4.0.0.42 ---- gunter-adam 10.1.0.13 ---- accepted accepted+ accepted gunter-unix 10.0.0.13 ---- harv-10 10.0.0.9 ---- hi-multics 10.0.0.80 ---- accepted accepted accepted isi-png11 10.1.0.27 ---- isi-speech11 10.0.0.22 ---- isi-vaxa 10.2.0.27 -t-- accepted accepted accepted jpl-vax 10.3.0.54 ---- d e a d kestrel 10.3.0.32 ---- lbl 10.0.0.34 ---- lbl-csam 10.1.0.34 ---s accepted accepted+ accepted ll 10.0.0.10 ---- accepted accepted accepted ll-11 10.3.0.10 ---- ll-asg 10.1.0.44 ---- d e a d ll-en 10.4.0.10 -tfs accepted accepted accepted ll-iptcp 10.3.44.10 T--- ll-tcp 10.1.0.10 T--- accepted accepted accepted ll-xn 10.2.0.10 ---- d e a d lll-mfe 10.1.0.21 ---- lll-unix 10.0.0.21 ---- d e a d logicon 10.2.0.3 ---- d e a d martin 10.3.0.53 ---- martin-b 10.1.0.64 -tfs accepted accepted accepted mcclellan 10.3.0.78 ---- accepted mit-ai 10.2.0.6 ---- accepted accepted+ accepted mit-ajax 18.10.0.64 -tf- accepted accepted accepted mit-cls 18.10.0.76 -tfs accepted accepted accepted mit-csr 18.10.0.8 ---s accepted accepted mit-devmultics 10.1.0.77 -t-s accepted accepted accepted mit-dms 10.1.0.6 ---- accepted accepted+ mit-mc 10.3.0.44 ---- accepted accepted+ accepted mit-ml 10.3.0.6 ---- accepted accepted+ accepted mit-multics 10.0.0.6 -t-s accepted accepted accepted mit-tstgw 10.2.0.44 T--- d e a d mit-xx 10.0.0.44 ---- accepted accepted+ refused mitre 10.0.0.17 T--- accepted accepted accepted mitre-bedford 10.0.0.66 ---- nadc 10.2.0.24 ---- u n r e a c h a b l e nadc-vax 10.0.0.24 -tfs accepted accepted accepted nalcon 10.1.0.81 ---- accepted accepted accepted nbs-pl 10.3.0.19 ---- nbs-sdc 10.1.0.19 ---- accepted accepted+ accepted nbs-unix 10.2.0.19 ---- d e a d nbs-vms 10.0.0.19 ---- accepted accepted accepted ncsc 10.1.0.53 ---- d e a d ndre1 48.3.1.41 -tfs accepted accepted+ accepted nlm-mcs 10.0.0.88 ---- accepted accepted accepted nosc-cc 10.0.0.3 -tfs accepted accepted accepted nosc-sdl 10.1.0.35 ---- nosc-secure2 10.0.0.35 ---- nosc-secure3 10.3.0.35 ---- d e a d nosc-spel 10.1.0.3 ---- d e a d Page 5

nprdc 10.3.0.3 -tfs accepted accepted accepted nps 10.0.0.33 T--- nrl 10.0.0.8 ---- accepted accepted accepted nrl-aic 10.1.0.8 T--- accepted accepted accepted nrl-css 10.7.0.8 ---- accepted accepted accepted nrl-tops10 10.3.0.8 ---- d e a d nsrdcoa 10.3.0.81 -tfs accepted accepted accepted nswc-dl 10.0.0.84 ---- accepted accepted nswc-g 10.1.0.84 T--- accepted accepted accepted nswc-wo 10.2.0.8 ---- accepted accepted accepted nusc 10.3.0.92 ---- d e a d nusc-npt 10.2.0.92 ---- nwc-387a 10.0.0.85 ---- d e a d nwc-387b 10.3.0.85 ---- accepted accepted accepted nyu 10.0.0.58 ---- accepted accepted accepted office-1 10.0.0.43 T--- office-10 10.1.0.93 -tf- accepted refused refused office-12 10.2.0.93 T--- accepted refused refused office-2 10.1.0.43 T--- office-3 10.2.0.43 T--- accepted refused refused office-7 10.3.0.43 -t-- accepted refused refused office-8 10.0.0.93 -t-- accepted refused refused okc-unix 10.3.0.46 -t-- accepted parc-maxc 10.0.0.32 -t-- accepted accepted+ accepted purdue 10.0.0.37 -tfs accepted accepted accepted purdue-tn 14.0.0.1 -tfs accepted accepted accepted radc-multics 10.0.0.18 ---- accepted accepted accepted radc-tops20 10.3.0.18 ---- accepted accepted+ accepted radc-unix 10.5.0.18 ---- d e a d radc-xper 10.1.0.18 ---- raisting 4.0.0.72 ---- raisting-expak 4.0.0.79 ---- raisting-monitor 4.0.0.78 ---- rand-relay 10.1.0.7 ---- accepted accepted accepted rand-unix 10.3.0.7 ---- accepted accepted accepted robins-unix 10.3.0.64 ---- d e a d rochester 10.4.0.18 ---- d e a d rutgers 10.2.0.58 ---- accepted accepted+ accepted s1-a 10.1.0.95 ---- s1-b 10.2.0.95 ---- d e a d s1-c 10.3.0.95 ---- accepted accepted refused s1-gateway 10.0.0.95 ---- sandia 10.0.0.87 ---- accepted accepted+ accepted satnet 4.0.0.0 ---- satnet-sink 4.0.0.37 ---- seismo 10.0.0.25 -tfs accepted accepted accepted sri-ai 10.2.0.73 ---- accepted accepted+ accepted sri-csl 10.2.0.2 ---- sri-iu 10.3.0.73 ---- accepted accepted+ accepted sri-kl 10.1.0.2 T--- accepted accepted+ accepted sri-nic 10.0.0.73 -t-- accepted refused accepted sri-nsc11 10.0.0.2 ---- sri-prmh 10.3.2.51 T--- sri-sta2 10.3.1.51 ---- Page 6

sri-sta6 10.1.1.51 ---- sri-tsc 10.3.0.2 -tfs accepted accepted+ accepted sri-unix 10.2.0.51 ---- accepted accepted accepted sri-warf 10.1.0.73 ---- srijoyce 10.1.4.51 -tf- accepted accepted refused st-nic 10.0.0.51 -t-- accepted refused refused su-ai 10.0.0.11 ---- su-dsn 10.1.0.56 ---- refused refused accepted su-score 10.3.0.11 -t-- accepted accepted accepted sumex-aim 10.0.0.56 ---- accepted accepted accepted tanum-expak 4.0.0.3 ---- tanum-monitor 4.0.0.43 ---- tycho 10.0.0.57 ---- ucb-arpa 10.0.0.78 -tf- accepted accepted+ accepted ucb-c70 10.1.0.78 ---- d e a d ucb-ingres 10.2.0.78 -tf- accepted accepted+ accepted ucbarpa 46.0.0.4 -tf- accepted accepted+ accepted ucbcad 46.0.0.5 -tf- ucbcalder 46.0.0.12 -tf- accepted accepted accepted ucbdali 46.0.0.13 -tf- ucbernie 46.0.0.6 -tf- ucbesvax 46.0.0.9 -tf- ucbingres 46.0.0.19 -tf- ucbkim 46.0.0.11 -tf- accepted accepted accepted ucbmatisse 46.0.0.14 -tf- ucbmedea 46.0.0.15 -tf- ucbmonet 46.0.0.7 -tf- accepted accepted accepted ucbvax 46.0.0.10 -tf- accepted accepted+ accepted ucl-cs 11.3.1.42 -t-- accepted ucl-ucl2 11.3.2.42 ---- ucl-ucl3 11.3.3.42 ---- ucl-ucl4 11.3.4.42 ---- ucl-ucl5 11.3.5.42 ---- ucl-ucl6 11.3.6.42 ---- ucl-ucl7 11.3.7.42 ---- ucla-ats 10.3.0.1 T--- accepted accepted accepted ucla-ccn 10.1.0.1 T--- accepted ucla-security 10.2.0.1 T--- accepted accepted accepted udel-ee 10.2.0.96 -tf- accepted accepted accepted udel-relay 10.0.0.96 ---- accepted accepted accepted udel-tcp 10.1.0.96 -tf- udel-tn 14.0.0.3 -tfs umd1 128.8.0.1 -tfs accepted accepted+ accepted umd2 128.8.0.2 -t-- refused refused refused umd3 128.8.0.3 -tfs accepted accepted+ accepted umd4 128.8.0.4 -tfs d e a d umd5 128.8.0.5 -tfs accepted accepted+ accepted umd6 128.8.0.6 -tfs d e a d umd7 128.8.0.7 -tfs refused refused refused usafa-gateway 10.2.0.69 ---- u n r e a c h a b l e usc-ecl 10.3.0.23 -t-- accepted accepted+ accepted usc-eclb 10.0.0.23 -t-- accepted accepted+ accepted usc-eclc 10.1.0.23 -t-- accepted accepted+ accepted Page 7

usc-isi 10.1.0.22 -t-s accepted accepted+ accepted usc-isib 10.3.0.52 -t-s accepted accepted+ accepted usc-isid 10.0.0.27 -t-s accepted accepted+ accepted usc-isie 10.1.0.52 -t-s accepted accepted+ accepted usc-isif 10.2.0.52 -t-s accepted accepted+ accepted usgs1-amdahl 10.2.0.68 ---- d e a d usgs1-multics 10.0.0.68 ---- accepted accepted accepted usgs2-multics 10.0.0.69 ---- accepted accepted accepted usgs3-multics 10.0.0.70 ---- accepted accepted accepted utah-20 10.3.0.4 T--- accepted accepted+ accepted utah-cs 10.0.0.4 -tfs accepted accepted+ accepted utexas-11 10.0.0.62 ---- accepted accepted accepted utexas-20 10.1.0.62 ---- accepted accepted+ accepted uw-vlsi 10.3.0.91 -tf- accepted accepted accepted uwisc-tn 14.0.0.2 -tfs accepted accepted+ accepted washington 10.0.0.91 -tfs accepted accepted+ accepted wharton-10 10.3.0.24 ---- wpafb 10.0.0.47 ---- accepted accepted wpafb-afwal 10.1.0.47 ---- accepted yale 10.2.0.9 ---- d e a d ypg 10.0.0.75 ---- d e a d Results in host table order: Name Address Claims Telnet FTP SMTP ---- ------- ------ ------ --- ---- ll 10.0.0.10 ---- accepted accepted accepted su-ai 10.0.0.11 ---- compion-vms 10.0.0.12 ---s accepted accepted accepted gunter-unix 10.0.0.13 ---- cmu-cs-b 10.0.0.14 ---- ames-tss 10.0.0.16 ---- accepted accepted accepted mitre 10.0.0.17 T--- accepted accepted accepted radc-multics 10.0.0.18 ---- accepted accepted accepted nbs-vms 10.0.0.19 ---- accepted accepted accepted sri-nsc11 10.0.0.2 ---- cctc 10.0.0.20 -t-- d e a d lll-unix 10.0.0.21 ---- d e a d isi-speech11 10.0.0.22 ---- usc-eclb 10.0.0.23 -t-- accepted accepted+ accepted nadc-vax 10.0.0.24 -tfs accepted accepted accepted seismo 10.0.0.25 -tfs accepted accepted accepted usc-isid 10.0.0.27 -t-s accepted accepted+ accepted arpa-dms 10.0.0.28 ---- d e a d brl 10.0.0.29 ---- accepted accepted accepted nosc-cc 10.0.0.3 -tfs accepted accepted accepted cca-unix 10.0.0.31 ---- u n r e a c h a b l e parc-maxc 10.0.0.32 -t-- accepted accepted+ accepted nps 10.0.0.33 T--- lbl 10.0.0.34 ---- nosc-secure2 10.0.0.35 ---- coins-tas 10.0.0.36 ---- purdue 10.0.0.37 -tfs accepted accepted accepted Page 8

utah-cs 10.0.0.4 -tfs accepted accepted+ accepted office-1 10.0.0.43 T--- mit-xx 10.0.0.44 ---- accepted accepted+ refused collins-pr 10.0.0.46 T--- d e a d wpafb 10.0.0.47 ---- accepted accepted afwl 10.0.0.48 ---- accepted accepted bbn-tenexb 10.0.0.49 -t-- accepted accepted+ accepted bbnf 10.0.0.5 -tf- accepted accepted accepted st-nic 10.0.0.51 -t-- accepted refused refused ada-vax 10.0.0.52 ---- accepted accepted accepted afsc-ad 10.0.0.53 T--- accepted accepted cit-20 10.0.0.54 T--- accepted accepted accepted anl 10.0.0.55 ---- sumex-aim 10.0.0.56 ---- accepted accepted accepted tycho 10.0.0.57 ---- nyu 10.0.0.58 ---- accepted accepted accepted etac 10.0.0.59 ---- d e a d mit-multics 10.0.0.6 -t-s accepted accepted accepted centacs-mmp 10.0.0.60 ---- d e a d utexas-11 10.0.0.62 ---- accepted accepted accepted afsc-sd 10.0.0.65 ---- mitre-bedford 10.0.0.66 ---- afsc-hq 10.0.0.67 ---- usgs1-multics 10.0.0.68 ---- accepted accepted accepted usgs2-multics 10.0.0.69 ---- accepted accepted accepted usgs3-multics 10.0.0.70 ---- accepted accepted accepted bbn-nu 10.0.0.72 ---s sri-nic 10.0.0.73 -t-- accepted refused accepted ypg 10.0.0.75 ---- d e a d ucb-arpa 10.0.0.78 -tf- accepted accepted+ accepted dec-2136 10.0.0.79 T--- d e a d nrl 10.0.0.8 ---- accepted accepted accepted hi-multics 10.0.0.80 ---- accepted accepted accepted bbnt 10.0.0.82 ---- accepted accepted accepted dtnsrdc 10.0.0 .81 ---- accepted accepted accepted nswc-dl 10.0.0.84 ---- accepted accepted nwc-387a 10.0.0.85 ---- d e a d sandia 10.0.0.87 ---- accepted accepted+ accepted nlm-mcs 10.0.0.88 ---- accepted accepted accepted harv-10 10.0.0.9 ---- washington 10.0.0.91 -tfs accepted accepted+ accepted office-8 10.0.0.93 -t-- accepted refused refused s1-gateway 10.0.0.95 ---- udel-relay 10.0.0.96 ---- accepted accepted accepted ucla-ccn 10.1.0.1 T--- accepted ll-tcp 10.1.0.10 T--- accepted accepted accepted compion 10.1.0.12 ---- accepted refused refused gunter-adam 10.1.0.13 ---- accepted accepted+ accepted cmu-cs-a 10.1.0.14 -t-s accepted accepted accepted radc-xper 10.1.0.18 ---- nbs-sdc 10.1.0.19 ---- accepted accepted+ accepted sri-kl 10.1.0.2 T--- accepted accepted+ accepted lll-mfe 10.1.0.21 ---- usc-isi 10.1.0.22 -t-s accepted accepted+ accepted Page 9

usc-eclc 10.1.0.23 -t-- accepted accepted+ accepted isi-png11 10.1.0.27 ---- nosc-spel 10.1.0.3 ---- d e a d cca-vms 10.1.0.31 T--- u n r e a c h a b l e fnoc 10.1.0.33 ---- d e a d lbl-csam 10.1.0.34 ---s accepted accepted+ accepted nosc-sdl 10.1.0.35 ---- cincpacflt-wm 10.1.0.36 ---- bragg-sta1 10.1.0.38 -t-- d e a d office-2 10.1.0.43 T--- ll-asg 10.1.0.44 ---- d e a d collins-gw 10.1.0.46 T--- wpafb-afwal 10.1.0.47 ---- accepted bbng 10.1.0.5 -tf- accepted accepted accepted usc-isie 10.1.0.52 -t-s accepted accepted+ accepted ncsc 10.1.0.53 ---- d e a d cit-vax 10.1.0.54 -tfs accepted accepted accepted anl-mcs 10.1.0.55 ---- accepted accepted accepted su-dsn 10.1.0.56 ---- refused refused accepted coins-gateway 10.1.0.57 ---- bnl 10.1.0.58 ---- d e a d mit-dms 10.1.0.6 ---- accepted accepted+ utexas-20 10.1.0.62 ---- accepted accepted+ accepted martin-b 10.1.0.64 -tfs accepted accepted accepted afgl 10.1.0.66 ---- accepted accepted rand-relay 10.1.0.7 ---- accepted accepted accepted bbn-unix 10.1.0.72 ---- accepted accepted accepted sri-warf 10.1.0.73 ---- mit-devmultics 10.1.0.77 -t-s accepted accepted accepted ucb-c70 10.1.0.78 ---- d e a d dec-marlboro 10.1.0.79 T--- accepted accepted accepted nrl-aic 10.1.0.8 T--- accepted accepted accepted nalcon 10.1.0.81 ---- accepted accepted accepted bbn-vax 10.1.0.82 -tfs accepted accepted accepted nswc-g 10.1.0.84 T--- accepted accepted accepted office-10 10.1.0.93 -tf- accepted refused refused csnet-sh 10.1.0.94 ---- accepted accepted+ accepted s1-a 10.1.0.95 ---- udel-tcp 10.1.0.96 -tf- sri-sta6 10.1.1.51 ---- srijoyce 10.1.4.51 -tf- accepted accepted refused ucla-security 10.2.0.1 T--- accepted accepted accepted ll-xn 10.2.0.10 ---- d e a d nbs-unix 10.2.0.19 ---- d e a d sri-csl 10.2.0.2 ---- nadc 10.2.0.24 ---- u n r e a c h a b l e isi-vaxa 10.2.0.27 -t-- accepted accepted accepted logicon 10.2.0.3 ---- d e a d office-3 10.2.0.43 T--- accepted refused refused mit-tstgw 10.2.0.44 T--- d e a d sri-unix 10.2.0.51 ---- accepted accepted accepted usc-isif 10.2.0.52 -t-s accepted accepted+ accepted afsc-dev 10.2.0.53 ---- accepted accepted acc 10.2.0.54 ---- d e a d Page 10

rutgers 10.2.0.58 ---- accepted accepted+ accepted mit-ai 10.2.0.6 ---- accepted accepted+ accepted aerospace 10.2.0.65 T--- accepted accepted accepted usgs1-amdahl 10.2.0.68 ---- d e a d usafa-gateway 10.2.0.69 ---- u n r e a c h a b l e bbn-clxx 10.2.0.71 -tfs u n r e a c h a b l e bbnp 10.2.0.72 -tfs accepted accepted accepted sri-ai 10.2.0.73 ---- accepted accepted+ accepted ucb-ingres 10.2.0.78 -tf- accepted accepted+ accepted nswc-wo 10.2.0.8 ---- accepted accepted accepted bbn-inoc 10.2.0.82 ---- yale 10.2.0.9 ---- d e a d nusc-npt 10.2.0.92 ---- office-12 10.2.0.93 T--- accepted refused refused s1-b 10.2.0.95 ---- d e a d udel-ee 10.2.0.96 -tf- accepted accepted accepted ucla-ats 10.3.0.1 T--- accepted accepted accepted ll-11 10.3.0.10 ---- su-score 10.3.0.11 -t-- accepted accepted accepted cmu-cs-c 10.3.0.14 ---- accepted accepted+ accepted ames-vmsb 10.3.0.16 ---- radc-tops20 10.3.0.18 ---- accepted accepted+ accepted nbs-pl 10.3.0.19 ---- sri-tsc 10.3.0.2 -tfs accepted accepted+ accepted edn-unix 10.3.0.20 -tfs accepted accepted usc-ecl 10.3.0.23 -t-- accepted accepted+ accepted wharton-10 10.3.0.24 ---- arpa-png11 10.3.0.28 ---- brl-bmd 10.3.0 .29 ---- accepted accepted refused nprdc 10.3.0.3 -tfs accepted accepted accepted kestrel 10.3.0.32 ---- fnoc-secure 10.3.0.33 ---- nosc-secure3 10.3.0.35 ---- d e a d utah-20 10.3.0.4 T--- accepted accepted+ accepted office-7 10.3.0.43 -t-- accepted refused refused mit-mc 10.3.0.44 ---- accepted accepted+ accepted okc-unix 10.3.0.46 -t-- accepted bbn-tenexc 10.3.0.49 -t-- accepted refused accepted bbna 10.3.0.5 -tf- accepted accepted accepted sri-sta2 10.3.1.51 ---- sri-prmh 10.3.2.51 T--- usc-isib 10.3.0.52 -t-s accepted accepted+ accepted martin 10.3.0.53 ---- jpl-vax 10.3.0.54 ---- d e a d aids-unix 10.3.0.56 ---- u n r e a c h a b l e mit-ml 10.3.0.6 ---- accepted accepted+ accepted centacs-tf 10.3.0.60 ---- d e a d robins-unix 10.3.0.64 ---- d e a d rand-unix 10.3.0.7 ---- accepted accepted accepted sri-iu 10.3.0.73 ---- accepted accepted+ accepted mcclellan 10.3.0.78 ---- accepted nrl-tops10 10.3.0.8 ---- d e a d nsrdcoa 10.3.0.81 -tfs accepted accepted accepted bbns 10.3.0.82 -tfs accepted accepted accepted Page 11

nwc-387b 10.3.0.85 ---- accepted accepted accepted uw-vlsi 10.3.0.91 -tf- accepted accepted accepted nusc 10.3.0.92 ---- d e a d s1-c 10.3.0.95 ---- accepted accepted refused cornell 10.3.0.96 -tfs accepted accepted accepted ll-iptcp 10.3.44.10 T--- ll-en 10.4.0.10 -tfs accepted accepted accepted rochester 10.4.0.18 ---- d e a d dca-ems 10.4.0.20 ---- accepted accepted accepted bbn-rsm 10.4.0.82 -t-- accepted radc-unix 10.5.0.18 ---- d e a d bbn-noc2 10.6.0.82 -tfs accepted accepted accepted nrl-css 10.7.0.8 ---- accepted accepted accepted ucl-cs 11.3.1.42 -t-- accepted ucl-ucl2 11.3.2.42 ---- ucl-ucl3 11.3.3.42 ---- ucl-ucl4 11.3.4.42 ---- ucl-ucl5 11.3.5.42 ---- ucl-ucl6 11.3.6.42 ---- ucl-ucl7 11.3.7.42 ---- csnet-purdue 128.10.0.2 -tfs accepted accepted accepted cmu-cs-ius 128.2.254.128 -tfs accepted accepted accepted cmu-cs-vlsi 128.2.254.129 -tfs accepted accepted accepted cmu-cs-ps 128.2.254.130 ---- d e a d cmu-cs-zog 128.2.254.131 -tfs accepted accepted accepted cmu-cs-g 128.2.254.132 -tfs accepted accepted accepted cmu-cs-cad 128.2.254.133 -tfs accepted accepted accepted cmu-cs-k 128.2.254.136 -tfs d e a d cmu-ri-fas 128.2.254.138 -tfs accepted accepted accepted cmu-cs-spice 128.2.254.139 -tfs accepted accepted accepted cmu-cs-gandalf 128.2.254.140 -tfs accepted accepted accepted cmu-ri-leg 128.2.254.141 -tfs d e a d cmu-ri-isl 128.2.254.143 -tfs accepted accepted accepted cmu-cs-j 128.2.254.144 -tfs d e a d cmu-cs-speech 128.2.254.145 -tfs accepted accepted accepted cmu-cs-unh 128.2.254.150 -tfs accepted accepted accepted cmu-ri-isl2 128.2.254.152 -tfs accepted accepted accepted cmu-cs-pt 128.2.254.155 -tfs accepted accepted accepted cmu 128.2.254.255 ---s d e a d dcn1 128.4.0.1 -tfs ted accepted+ accepted dcn2 128.4.0.2 -tfs accepted accepted+ accepted dcn3 128.4.0.3 -tfs accepted accepted+ accepted dcn4 128.4.0.4 -tfs d e a d dcn5 128.4.0.5 -tfs accepted accepted+ accepted dcn6 128.4.0.6 -tfs accepted accepted+ accepted dcn7 128.4.0.7 -tfs d e a d dcn8 128.4.0.8 -tfs d e a d dcn9 128.4.0.9 -tfs d e a d ford1 128.5.0.1 -tfs accepted accepted+ accepted ford2 128.5.0.2 -tfs accepted accepted+ accepted ford3 128.5.0.3 -tfs accepted accepted+ accepted ford4 128.5.0.4 -tfs accepted accepted+ accepted ford-lab 128.5.0.8 -tfs accepted accepted+ accepted ford-vax 128.5.0.9 -tfs d e a d Page 12

ford-res 128.5.0.10 -tfs d e a d ford-ecc 128.5.0.11 -tfs accepted accepted+ accepted ford-srl 128.5.0.12 -tfs d e a d ford-ers 128.5.0.13 -tfs accepted accepted+ accepted ford-eed 128.5.0.14 -tfs accepted accepted+ accepted ford-foe 128.5.0.15 -tfs d e a d ford-wdl1 128.5.32.1 -tfs accepted accepted accepted ford-wdl2 128.5.32.2 -tfs d e a d ford-wdl3 128.5.32.3 -tfs d e a d ford-wdl4 128.5.32.4 -tfs d e a d ford-wdl5 128.5.32.5 -tfs d e a d ford-wdl6 128.5.32.6 -t-- accepted accepted accepted dfvlr1 128.7.0.1 -tfs u n r e a c h a b l e dfvlr2 128.7.0.2 -tfs u n r e a c h a b l e dfvlr3 128.7.0.3 -tfs u n r e a c h a b l e dfvlr7 128.7.0.7 -tfs u n r e a c h a b l e umd1 128.8.0.1 -tfs accepted accepted+ accepted umd2 128.8.0.2 -t-- refused refused refused umd3 128.8.0.3 -tfs accepted accepted+ accepted umd4 128.8.0.4 -tfs d e a d umd5 128.8.0.5 -tfs accepted accepted+ accepted umd6 128.8.0.6 -tfs d e a d umd7 128.8.0.7 -tfs refused refused refused purdue-tn 14.0.0.1 -tfs accepted accepted accepted uwisc-tn 14.0.0.2 -tfs accepted accepted+ accepted udel-tn 14.0.0.3 -tfs mit-csr 18.10.0.8 ---s accepted accepted mit-ajax 18.10.0.64 -tf- accepted accepted accepted mit-cls 18.10.0.76 -tfs accepted accepted accepted csnet-sh 192.5.2.3 T--- accepted accepted+ accepted cit-750 192.5.7.3 -tfs u n r e a c h a b l e edn-host1 21.1.0.1 -tfs d e a d bbncca 3.0.0.2 -tfs accepted accepted accepted bbnccf 3.0.0.4 -tfs accepted accepted accepted bbnx 3.0.0.8 -tfs accepted accepted accepted csnet-cic 3.0.0.14 -tfs accepted accepted accepted bbn-noc 3.1.0.14 -tfs accepted accepted accepted bbnccb 3.1.0.2 -tfs accepted accepted accepted bbn-unix 3.1.0.4 -tfs accepted accepted accepted alta-coma 3.1.0.50 T--- bbn-admin 3.1.0.6 -tfs accepted accepted accepted bbnt 3.1.0.7 -tfs accepted accepted accepted bbnccc 3.2.0.2 -tfs accepted accepted accepted bbn-inoc 3.2.0.6 -tfs accepted accepted accepted bbnq 3.2.0.7 -tfs accepted accepted accepted bbny 3.2.0.8 -tfs accepted accepted accepted bbnccd 3.3.0.2 -tfs accepted accepted accepted bbncci 3.3.0.4 -tfs accepted accepted accepted bbnw 3.3.0.6 -tfs accepted accepted accepted bbnt 3.3.0.7 -tfs accepted accepted accepted bbn-cd 3.3.0.9 -tfs accepted accepted accepted satnet 4.0.0.0 ---- etam-expak 4.0.0.1 ---- goonhilly-expak 4.0.0.2 ---- Page 13

tanum-expak 4.0.0.3 ---- satnet-sink 4.0.0.37 ---- etam-monitor 4.0.0.41 ---- goonhilly-monitor 4.0.0.42 ---- tanum-monitor 4.0.0.43 ---- raisting 4.0.0.72 ---- raisting-monitor 4.0.0.78 ---- raisting-expak 4.0.0.79 ---- fucino 4.0.0.88 ---- fucino-monitor 4.0.0.94 ---- fucino-expak 4.0.0.95 ---- ucbarpa 46.0.0.4 -tf- accepted accepted+ accepted ucbcad 46.0.0.5 -tf- ucbernie 46.0.0.6 -tf- ucbmonet 46.0.0.7 -tf- accepted accepted accepted ucbesvax 46.0.0.9 -tf- ucbvax 46.0.0.10 -tf- accepted accepted+ accepted ucbkim 46.0.0.11 -tf- accepted accepted accepted ucbcalder 46.0.0.12 -tf- accepted accepted accepted ucbdali 46.0.0.13 -tf- ucbmatisse 46.0.0.14 -tf- ucbmedea 46.0.0.15 -tf- ucbingres 46.0.0.19 -tf- ndre1 48.3.1.41 -tfs accepted accepted+ accepted clarksburg-expak 8.0.0.4 ---- clarksburg-monitor 8.0.0.44 ---- d e a d Page 14

Who talks TCP? RFC TOTAL SIZE: 45175 bytes PUBLICATION DATE: Wednesday, September 23rd, 1992 LEGAL RIGHTS: The IETF Trust (see BCP 78)


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© RFC 839: The IETF Trust, Wednesday, September 23rd, 1992
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