asn.dev

Autonomous system

AS204144 COMFORT-AS

Unclassified RIPE

IPv4 addresses 18.18K 18 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 12 0 downstream
Flagged prefixes 0 none

Summary

Comfort XXI Century

Russian Federation · AI-generated

isp residential russia telecom

COMFORT-AS is operated by Comfort XXI Century Ltd.

What it's used for

  • The address space carries residential and business internet access, evidenced by netnames such as RU-COMFORT-20090518 and RU-COMFORT-20150813, and reverse DNS entries like ip0-74.113.185.azovnet.com.
  • The AS announces 18 IPv4 prefixes covering 18,176 addresses with 32 observed neighbours, a ratio consistent with an access network serving local subscribers rather than a transit provider.
  • Traffic from this AS consists of subscriber eyeballs and local business endpoints within the Russian Federation, specifically in regions associated with the registrants such as Azov and Crimea.

Notable

  • Registrants are mixed: most prefixes are registered to Comfort XXI Century Ltd., while 45.80.240.0/22, 45.85.212.0/22, and 45.88.252.0/22 are registered to Joint stock company "For", and 91.197.132.0/22 is registered to Crimean telecommunications Ltd.
  • The inventory is fragmented across 18 distinct prefixes, including a large /20 block and numerous /22 and /24 blocks, indicating a network built through incremental acquisition or regional consolidation.

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

12 upstream, 0 downstream and 12 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS201776Miranda-Media Ltd728
AS6789CRELCOM LLC229
AS28761CrimeaCom South LLC192
AS6939Hurricane Electric LLC8
AS8218Zayo Infrastructure France SA4
AS24482SG.GS4
AS37721Virtual-Technologies-Solutions-SA4
AS49673Truenetwork LLC4

All 12 upstreams →

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 18 prefixes · 18.18K addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation18

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS204144
Registry name
COMFORT-AS
Registrant
Comfort XXI Century Ltd.
Abuse contact
abuse@komfort21vek.ru
Registered
2015-08-13
Last changed
2023-12-13
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
90% valid · 18 valid, 1 with no ROA 1 RPKI-invalid
ROAs
18 authorising AS204144
ASPA
no ASPA record
IRR
95% registered · 19 of 20 announcements
Route objects
21 naming AS204144

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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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