asn.dev

Autonomous system

AS57577 TAVAN

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly IR
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Tavanir

Iran (Islamic Republic of) · AI-generated

utility power iran corporate

TAVAN is operated by Tavanir, the state-owned entity managing Iran's electric power generation, transmission, and distribution.

What it's used for

  • The address space carries internal corporate infrastructure, identified by the netname Tavanir and registrant Iran Power Generation transmission & Distribution Management Co.
  • The AS announces a single IPv4 prefix, 91.233.56.0/22, comprising 1024 addresses, with 2 observed routing neighbours.
  • Traffic from this AS consists of internal network management, SCADA systems, and administrative endpoints for Iran's national power grid operations.

Notable

  • The RDAP registrant Iran Power Generation transmission & Distribution Management Co. aligns with the AS handle TAVAN and the registry holder.
  • Tavanir was restructured and renamed in 1989 to its current name, serving as the central authority for Iran's electricity industry.
  • The inventory consists of a single contiguous /22 block with no announced IPv6 prefixes.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS44889Farhang Azma Communications Company LTD122
AS58224Iran Telecommunication Company PJS120

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-24, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
IRIran (Islamic Republic of)1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS57577
Registry name
Tavanir
Registrant
AZMA-MNT
Abuse contact
mohammadali@tavanir.org.ir
Registered
2011-12-05
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
5 authorising AS57577
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
5 naming AS57577

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 2026-10-24. 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

Cross-check