AS13975 — NYCPM

AS13975 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

Five letters, repeated in every field the registry offers.

What it's used for

• An institutional network. 256 addresses in a single IPv4 prefix, one observed BGP neighbour, and no IPv6 announced.

Notable

• The block is 207.90.250.0/24, netname NYCPM, registered to NYCPM.
• The AS handle is also NYCPM.
• Routing was first seen in 2000.
• Three addresses were queried for reverse DNS and none returned a name.

Interesting

• The holder name, the handle, the netname and the registrant are the same five characters. That is rare. Most records disagree with each other somewhere, because they are filled in by different people at different times, and total agreement means one person filed everything at once.
• What the letters expand to is not in any of those fields. An acronym that never appears alongside its expansion is only legible to people who already know the organisation, which was a perfectly reasonable assumption when internet registries were mostly read by the institutions in them.
• A single /24 behind one upstream, unchanged since 2000, is a network that has needed nothing since it was set up. Continuity like that is invisible from the outside precisely because nothing about it ever changes.

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

Announced prefixes

• 207.90.250.0/24

Upstream networks

• AS12271 Charter Communications Inc
• AS701 Verizon Business

Adjacent networks

• AS12271 Charter Communications Inc
• AS701 Verizon Business

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-HURRICANE, AS-RR-BIZ, AS-WINDSTREAM-CUST, AS855:AS-CUSTOMERS.