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15:30

A records on top level domains

After I stumbled upon the wonderful URL shortener http://to/ today and immediately began posting it on IRC, I received a comment that someone didn’t even know that is was possible to do so. I, of course, could only comment “of course it’s possible”. But in the same train of thought, I just had to have a look at who else has a valid A record on their top level domain. So I fetched the IANA TLD list and, after being baffled by the punycode TLDs, threw some sh at the problem:
(for domain in $(grep -v '^#' tlds-alpha-by-domain.txt); do host -t A "${domain}."; done) | grep -v 'has no A record'

For the sake of enjoyability, I thus offer the results in table form, along with what kind of site is running on port 80. Data timestamp is 2010–01-08T16:05:00+0100, location for routing is DTAG-DIAL26 / AS3320.

TLD IP content (port 80) AC 193.223.78.210 “Always connected” (NIC.AC) AI 209.59.119.34 “Offshore Information Services” BI 196.2.8.205 “It works!” CM 195.24.205.60 cm [195.24.205.60] 80 (www) : Connection refused DK 193.163.102.23 “DK Hostmaster” (NIC.DK) GG 87.117.196.80 Channel Isles Domain Registration HK 203.119.2.28 hk [203.119.2.28] 80 (www) : No route to host IO 193.223.78.212 NIC.IO JE 87.117.196.80 Channel Isles Domain Registration PH 203.119.4.7 HTTP 500.100 via broken Microsoft IIS PN 80.68.93.100 Apache default home page PW 203.199.114.33 pw [203.199.114.33] 80 (www) : No route to host SH 64.251.31.234 sh [64.251.31.234] 80 (www) : No route to host TK 217.119.57.22 “TK your long URL”, free .tk domain name registry TM 193.223.78.213 NIC.TM TO 216.74.32.107 TO./ URL shortener UZ 91.212.89.8 some WAP page I can’d decipher WS 63.101.245.10 ws [63.101.245.10] 80 (www) : Connection timed out

So, in short, 5 of 18 (27%) are downright broken, one is being autistic, and a further 2 (11%) are not configured to do anything meaningful, leading to a total of 8 — or 44% — of TLD A records being useless. Bonus: none of the sites have AAAA records and, thus, no IPv6 availability.

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