Autonomous system
AS15611 IROST-AS
Unclassified RIPE
Summary
IROST
research education government infrastructure
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
4 upstream, 0 downstream and 4 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 3.07K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IR | Iran (Islamic Republic of) | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15611- Registry name
- IROST-AS
- Registrant
- IROST-MNT
- Abuse contact
- ipdomain@irost.ORG
- Registered
- 2001-12-01
- Last changed
- 2025-08-26
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 12 valid, 0 with no ROA
- ROAs
- 20 authorising AS15611
- ASPA
- no ASPA record
- IRR
- 100% registered · 12 of 12 announcements
- Route objects
- 21 naming AS15611
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,779 prefixes, as published 2026-10-23. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere