AS15611 — IROST-AS

AS15611 announces 8 IPv4 prefixes covering 3,072 addresses and 0 IPv6 prefixes.

About this network

The announced blocks are pieces of two ranges with gaps left unrouted between them.

What it's used for

• A national research organisation's network. Eight IPv4 prefixes announced from Iran, no IPv6, three thousand addresses, across three observed BGP neighbours.

Notable

• Four single blocks come out of one range with unannounced gaps between them, so parts of that range are used somewhere other than here or not at all.
• Six netnames follow one scheme with two different allocation dates, one of them earlier than the first time this number appears in routing records.
• Two blocks carry a netname suggesting a data centre service and list only an administrative role as registrant, with no organisation named.
• The holder name uses an ampersand rather than the word it stands for.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• Gaps in an announced range usually mean the space was subdivided long ago and some pieces went elsewhere. Whoever holds the missing blocks is not visible from here.
• An allocation date that predates the network's first appearance in routing means the addresses were used privately, or used by someone else, before this number began announcing them.
• A research organisation with three thousand addresses, three upstreams and no IPv6 is a network built once and maintained rather than grown.

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

Announced prefixes

• 62.60.136.0/23
• 62.60.139.0/24
• 62.60.140.0/24
• 62.60.142.0/24
• 62.60.145.0/24
• 213.176.4.0/23
• 213.176.122.0/23
• 213.176.124.0/23

Upstream networks

• AS34837 Institute for Research in Fundamental Sciences
• AS42337 Respina Networks & Beyond PJSC
• AS44285 Sefroyek Pardaz Engineering PJSC

Adjacent networks

• AS34837 Institute for Research in Fundamental Sciences
• AS42337 Respina Networks & Beyond PJSC
• AS44285 Sefroyek Pardaz Engineering PJSC