asn.dev

Autonomous system

AS21017 VSI-AS PJSC Rostelecom. Voronezh branch

Unclassified RIPE

IPv4 addresses 21.50K 6 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly RU
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Rostelecom

Russian Federation · AI-generated

telecom residential business russia

VSI-AS PJSC Rostelecom. Voronezh branch is operated by PJSC Rostelecom.

What it's used for

  • The address space carries Rostelecom infrastructure, with netnames RU-RTK-20010725, RU-RTK-20060111, and MACROREGIONAL_CENTER indicating regional network operations.
  • The AS announces 21504 IPv4 addresses across 6 prefixes and maintains 1 observed neighbour, a ratio characteristic of an access or eyeball network rather than a transit provider.

Notable

  • Registrants consistently identify the holder as OJSC Rostelecom, PJSC Rostelecom, or PJSC Rostelecom Technical Team, aligning with the AS handle.
  • The inventory consists of six IPv4 prefixes, including two /19 blocks and four smaller /21 and /22 blocks, all located in the Russian Federation.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS12389PJSC Rostelecom434

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, 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 6 prefixes · 21.50K addresses IPv6 0 prefixes

CountryNamePrefixes
RURussian Federation6

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS21017
Registry name
VSI-AS
Registrant
PJSC Rostelecom
Abuse contact
abuse@rt.ru
Registered
1970-01-01
Last changed
2025-04-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 7 valid, 0 with no ROA
ROAs
8 authorising AS21017
ASPA
no ASPA record
IRR
100% registered · 7 of 7 announcements
Route objects
10 naming AS21017

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: 431 networks and 1,768 prefixes, as published 2026-10-12. 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