AS15261 — ZT

AS15261 announces 2 IPv4 prefixes covering 768 addresses and 0 IPv6 prefixes.

About this network

A two-letter AS handle, the shortest in this range.

What it's used for

• A telecommunications company's network. Two IPv4 prefixes announced from Puerto Rico, no IPv6, and two observed BGP neighbours.

Notable

• The AS handle is two letters, the company's initials and nothing else, where most handles in this range run to eight or more characters.
• Both blocks carry the same netname, the company's first word alone, and the same registrant.
• The two prefixes come from one range but are not adjacent: a /24 sits two blocks below a /23, with the block between them announced by nobody.
• Six addresses were queried for reverse DNS and none returned a name.
• The routing history begins in 2000.

Interesting

• A two-letter handle is a claim staked early. Short identifiers were available when this number was issued and are not now, and the fact that it survives means nobody has had to disambiguate it since.
• Announcing from Puerto Rico puts this network in a territory whose connectivity depends on submarine cable landings, where two upstreams means something different than it does on a continent.
• One netname, one registrant, no reverse names, and seven hundred and sixty-eight addresses. The record is consistent and says almost nothing, which describes most small carriers here.

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

Announced prefixes

• 162.222.108.0/24
• 162.222.110.0/23

Upstream networks

• AS23520 Columbus Networks USA, Inc.
• AS33182 HostDime.com, Inc.

Adjacent networks

• AS23520 Columbus Networks USA, Inc.
• AS33182 HostDime.com, Inc.