asn.dev

Autonomous system

AS51819 YAR-AS

Unclassified RIPE

IPv4 addresses 47.62K 17 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

ER-Telecom Holding

Russian Federation · AI-generated

residential isp russia fixed

YAR-AS is operated by JSC "ER-Telecom Holding".

What it's used for

  • The address space carries residential and business subscriber traffic, evidenced by reverse DNS entries such as dynamic.yar.ertelecom.ru, pppoe.yar.ertelecom.ru, and static-business.yar.ertelecom.ru.
  • The AS announces 47,616 IPv4 addresses across 17 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a leaf access network rather than a transit provider.
  • Traffic consists of fixed-line broadband subscribers in the Yaroslavl and Kazan regions, utilizing PPPoE and dynamic IP assignment for residential users and static IPs for business customers.

Notable

  • Registrants consistently identify JSC "ER-Telecom Holding" and its regional branches (Yaroslavl, Kazan), aligning with the AS holder.
  • The inventory is subdivided into multiple /21 and /20 blocks, with netnames like ERTH-YAR-PPPOE-10-NET reflecting site-by-site segmentation of the corporate estate.
  • The address inventory includes blocks from different regional branches, such as ERTH-KAZAN-PPPOE-36-NET, indicating a multi-region operational footprint under a single AS.

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

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

ASNetworkPaths seen
AS9049JSC "ER-Telecom Holding"3,185

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 17 prefixes · 47.62K addresses IPv6 1 prefixes

CountryNamePrefixes
RURussian Federation18

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51819
Registry name
YAR-AS
Registrant
JSC "ER-Telecom Holding"
Abuse contact
abuse@domru.ru
Registered
2010-11-10
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
9% valid · 5 valid, 51 with no ROA
ROAs
1 authorising AS51819
ASPA
no ASPA record
IRR
100% registered · 56 of 56 announcements
Route objects
109 naming AS51819

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 1,772 prefixes, as published 2026-10-15. 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