AS14381 — CATERPILLAR-INC

AS14381 announces 16 IPv4 prefixes covering 135,936 addresses and 3 IPv6 prefixes.

About this network

One manufacturer's network holding address space from three regional registries at once.

What it's used for

• A global manufacturer's corporate network. 135,936 addresses across 26 IPv4 prefixes plus three IPv6 prefixes, with five observed BGP neighbours.

Notable

• The bulk is 137.230.0.0/16 under the netname CATNET, plus 165.26.0.0/17 and eight smaller pieces of the same range, all under the netname CAT.
• 103.98.174.0/23 is registered through a different regional registry as CATERPILLAR-US, with an incident-response object named IRT-CATERPILLAR-AP.
• 192.189.128.0/22 uses the netname NET192, registered to Various Registries (Maintained by ARIN).
• The announcement also includes 203.9.78.0/23, 185.128.184.0/24, 185.128.186.0/24, 12.2.142.0/24 and 12.15.28.0/24.
• The IPv6 side is 2407:2d00::/32 plus two /44s of 2620:162.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• Prefixes from three regional registries in one announcement is what a company with offices on three continents ends up holding. Each region's space was requested locally, years apart, and the routing pulled it all back under one AS number.
• The 12.2 and 12.15 blocks are single /24s carved out of a carrier's range. A customer announcing provider space under its own AS number is keeping the addresses through a change of circuit, which is worth the paperwork only when renumbering would be worse.
• NET192 names a block whose custodian is the registry itself, a marker of registration old enough to predate the current allocation process.

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

Announced prefixes

• 12.2.142.0/24
• 12.15.28.0/24
• 103.98.172.0/24
• 103.98.174.0/23
• 137.230.0.0/16
• 165.26.0.0/16
• 185.128.184.0/24
• 185.128.186.0/24
• 192.56.231.0/24
• 192.189.128.0/22
• 192.189.132.0/24
• 198.180.154.0/24
• 198.206.246.0/24
• 203.9.78.0/23
• 205.137.96.0/24
• 206.203.171.0/24
• 2407:2d00::/32
• 2620:162::/44
• 2620:162:20::/44

Upstream networks

• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS2687 AT&T Enterprises, LLC
• AS2686 AT&T Enterprises, LLC
• AS7018 AT&T Enterprises, LLC
• AS11427 Charter Communications Inc

Adjacent networks

• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS2687 AT&T Enterprises, LLC
• AS2686 AT&T Enterprises, LLC
• AS7018 AT&T Enterprises, LLC
• AS11427 Charter Communications Inc