All, Please find below another (belated) hostcount for May 1993. - New country: fo - Faroe Islands - some countries went down slightly (dk, se, il and ro), all because of nameserver reachability issues - in total an increase of just over 19,000 to just over 385,000. - History again appended - output can be found ion ftp.ripe.net:ripe/hostcount Cheers, -Marten ------- RIPE DNS Hostcount Previous Count : Fri Apr 30 1993 This Count : Mon May 31 1993 CY SOA COUNTED DUPL REAL CHANGE ============================================================ al 1 0 0 0 0 at 253 11157 79 11078 + 461 be 49 3706 78 3628 + 118 bg 1 1 0 1 0 by 0 0 0 0 0 ch 144 28970 713 28257 + 1236 cs 106 2996 57 2939 + 538 cy 5 30 0 30 0 cz 73 2696 44 2652 + 1548 de 1219 82369 1544 80825 + 2279 dk 98 5448 54 5394 - 307 dz 0 0 0 0 0 ee 15 187 1 186 + 49 eg 1 0 0 0 0 es 236 8484 123 8361 + 533 fi 198 25448 660 24788 + 2927 fo 1 0 0 0 0 fr 476 36504 540 35964 + 437 gb 1 7 0 7 0 ge 1 0 0 0 0 gr 67 1133 181 952 + 142 hr 20 454 2 452 + 34 hu 23 1261 4 1257 + 405 ie 39 1612 34 1578 + 84 is 29 1163 10 1153 + 120 it 288 11584 132 11452 + 509 il 54 3949 38 3911 - 412 li 1 0 0 0 0 lt 1 0 0 0 0 lu 11 175 1 174 + 21 lv 1 8 0 8 + 1 mt 1 0 0 0 0 nl 357 33084 441 32643 + 2696 no 394 23175 256 22919 + 1558 pl 143 2832 18 2814 + 302 pt 81 2562 49 2513 + 133 ro 2 14 0 14 - 1 se 416 29812 255 29557 - 273 si 10 433 2 431 + 47 sk 11 118 5 113 + 43 su 127 156 2 154 + 75 tn 0 0 0 0 0 tr 13 334 4 330 + 136 ua 28 0 0 0 0 uk 582 78050 9065 68985 + 3919 va 0 0 0 0 0 yu 2 2 0 2 0 ============================================================ 5579 399914 14392 385522 +19358 History Oct 1990 31724 Nov 1990 33665 Dec 1990 29230 Jan 1991 43832 Feb 1991 - Mar 1991 44506 Apr 1991 46948 May 1991 - Jun 1991 63267 Jul 1991 - Aug 1991 73069 Sep 1991 92834 Oct 1991 104824 Nov 1991 129652 Dec 1991 - Jan 1992 141308 Feb 1992 161434 Mar 1992 167939 Apr 1992 170050 May 1992 182528 Jun 1992 196758 Jul 1992 213017 Aug 1992 221951 Sep 1992 232522 Oct 1992 254585 Nov 1992 271795 Dec 1992 284374 Jan 1993 303828 Feb 1993 322902 Mar 1993 355140 Apr 1993 366164 May 1993 385522
- in total an increase of just over 19,000 to just over 385,000.
- History again appended
- output can be found ion ftp.ripe.net:ripe/hostcount
Marten, I think it would be a good idea to supply reachability information with these stats. ping'ing the addresses is a fairly good reality check (for example in Switzerland only about a third of the "hosts" are actually reachable according to the US domain survey). Additionally, it would be a good idea to include a short statement as to what the numbers actually mean, and a disclaimer. Background: more and more these numbers are used in PR, it is very well imaginable that there might be legal trouble at one point in time. Simon
poole@eunet.ch (Simon Poole) writes: * Marten, * * I think it would be a good idea to supply reachability information * with these stats. ping'ing the addresses is a fairly good reality check * (for example in Switzerland only about a third of the "hosts" are actually * reachable according to the US domain survey). Simon, I have got some major problems with pinging each and every host in the hostcount: - Not all hosts respond to a ping (PCs for instance) but are part of the Internet in my view. Given the large amounts of PCs around, this will pull your figure down. - Not all hosts are reachable from all parts of the Internet (AUP, firewalls, access filters). Define "reachable on the Internet" for me ... Doing pings from one central place may give distorted figures. - I'd like to keep the once a month stats going, pinging all hosts may cause the program to run for a week or so I think I made reasonably clear what the hostcount indicates, it certainly does NOT indicate reachability. I am willing to write some scripts to see how long it takes and what the results are. I'll give it a go for CH. * Additionally, it would be a good idea to include a short statement * as to what the numbers actually mean, and a disclaimer. Background: * more and more these numbers are used in PR, it is very well imaginable * that there might be legal trouble at one point in time. Err, yes. I'll take it up with my management ;-) -Marten
I have got some major problems with pinging each and every host in the hostcount:
- Not all hosts respond to a ping (PCs for instance) but are part of the Internet in my view. Given the large amounts of PCs around, this will pull your figure down.
- Not all hosts are reachable from all parts of the Internet (AUP, firewalls, access filters).
Fully agreed. My reasoning for wanting this number is that it gives a good and trustworthy lower bound on the number of network interfaces connected (the "real" number will not be lower than this measurement). As to the validity of the current number, you know just as good as I do that we have no idea how "real" this is. For example a number of the largest IP users in Switzerland are customers of ours, however since they run seperate external DNS servers their host count is probably only three orders of magnitude to low. On the other hand it's just so easy to fake the numbers (want to overtake your competition? A 10 second shell script will do the job). The ping numbers would allow us to get some idea on how good the DNS counts are. At least in the larger countries we can expect roughly the same ratio of PC's/Macs/Workstations/etc. and can investigate when DNS count/reachable hosts is totally off. Simon
poole@eunet.ch (Simon Poole) writes * > * > - in total an increase of just over 19,000 to just over 385,000. * > * > - History again appended * > * > - output can be found ion ftp.ripe.net:ripe/hostcount * > * * Marten, * * I think it would be a good idea to supply reachability information * with these stats. ping'ing the addresses is a fairly good reality check * (for example in Switzerland only about a third of the "hosts" are actually * reachable according to the US domain survey). * * Additionally, it would be a good idea to include a short statement * as to what the numbers actually mean, and a disclaimer. Background: * more and more these numbers are used in PR, it is very well imaginable * that there might be legal trouble at one point in time. OK Simon, here's the results of pinging every single host in CH: 28484 hosts were pinged (a bit different than the hostcount figures, but that is because I massaged the data a bit): Mon Jun 7 19:42:04 MET DST 1993 Summary: 28484 hosts pinged 9155 reachable (32.1 %) 19329 unreachable (67.9 %) Fri Jun 11 17:12:19 MET DST 1993 This took 4 days, but that was because an error in the ping timeouts I used. This was one ping each, 15 seconds timeout. Reducing the timeout to two seconds, and doing 10 pings in parallel, would mean something like 1.5 hours for CH, and something like 24 hours for all countries maximum, assuming that the 2 seconds time out would be enough. -Marten
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Marten Terpstra -
poole＠eunet.ch