AS13805 — WORLD-COMMUNICATIONS

AS13805 announces 1 IPv4 prefixes covering 2,048 addresses and 0 IPv6 prefixes.

About this network

The one address that answers does so under another country's domain, with its octets fully reversed.

What it's used for

• A communications provider's network. 2,048 addresses in the single IPv4 prefix 209.213.184.0/21, two observed BGP neighbours, and no IPv6 announced.

Notable

• 209.213.189.254 answers as 254.189.213.209.server-hosting.co.cr, the address backwards in dotted form.
• The domain sits under a country code that is not the one the block is announced from.
• The block is netname WCS-BLCK-1, an initialism and the word block with its vowel removed.
• The registrant and the AS handle are the same two words.
• Three addresses were queried for reverse DNS and one returned a name.

Interesting

• A reverse name that is the address written backwards, with the dots kept, is the raw form of the lookup itself with a domain glued on the end. Whoever built the zone automated it from the query rather than from the address.
• The hosting domain belonging to another country says who operates the machines, which is not the same as who announces them or where the addresses are registered. Three answers to what should be one question.
• Dropping a vowel to shorten block to four characters, in a field with room to spare, is a habit from systems that once counted every character.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 209.213.184.0/21

Upstream networks

• AS23520 Columbus Networks USA, Inc.
• AS262197 MILLICOM CABLE COSTA RICA S.A.

Adjacent networks

• AS23520 Columbus Networks USA, Inc.
• AS262197 MILLICOM CABLE COSTA RICA S.A.