AS15874 — INTERKAM

AS15874 announces 19 IPv4 prefixes covering 12,544 addresses and 1 IPv6 prefixes.

About this network

One router's reverse name sits on a domain spelled one letter away from every other name in the network.

What it's used for

• A regional provider's network. Twelve IPv4 prefixes and one IPv6 /29 announced from Poland, fourteen thousand eight hundred and forty-eight addresses, across six observed BGP neighbours.

Notable

• Seven of eighteen queried addresses answered. Six of those names are the word for a host with the last octet attached, then the letter for a virtual network with the third octet, then the company's domain.
• The seventh is a router, on a different block, and its domain differs from the company's by one letter in the last position before the country code.
• Netnames sort the estate by purpose rather than by date: one for the core, several for customers, one for customers at a named town, and three carrying a country code with a contracted brand and 20120220.
• The IPv6 allocation is a /29, which is the size a provider receives to hand out, not one address range.

Interesting

• A /29 in IPv6 is larger than every IPv4 address that has ever existed, many times over, held by a provider announcing under fifteen thousand IPv4 addresses. That asymmetry is the whole point of the newer protocol and it looks absurd in an inventory.
• Naming customer blocks after a town while the rest are generic tells you where a second network was absorbed, and the odd router domain sits on exactly that block.

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

Announced prefixes

• 37.130.0.0/24
• 37.130.2.0/24
• 37.130.4.0/23
• 37.130.7.0/24
• 37.130.15.0/24
• 37.130.16.0/20
• 37.130.32.0/24
• 37.130.34.0/23
• 37.130.37.0/24
• 37.130.39.0/24
• 37.130.40.0/21
• 37.130.49.0/24
• 37.130.50.0/23
• 37.130.55.0/24
• 37.130.56.0/24
• 37.130.58.0/23
• 37.130.60.0/23
• 37.130.63.0/24
• 91.231.24.0/22
• 2a0c:1680::/29

Upstream networks

• AS29535 Orange Polska Spolka Akcyjna
• AS24482 SG.GS
• AS5617 Orange Polska Spolka Akcyjna

Adjacent networks

• AS29535 Orange Polska Spolka Akcyjna
• AS24482 SG.GS
• AS5617 Orange Polska Spolka Akcyjna

Routing security

• RPKI: 6 valid, 0 invalid and 0 not-found announcements; 10 ROAs.
• ASPA: none published.
• IRR: 83% of announcements registered; 9 route objects.
• Listed in as-sets: AS-FONE-ALL, AS-HURRICANE, AS-INTERKAM, AS-IPARTNERS, AS-TRANSROUTE-SPEC, AS-WAWTEL, AS29535:AS-MIX2, AS5617:AS-PL, AS5617:AS-WORLD-TRANSIT, AS8246:AS-TPNET.