Autonomous system
AS25515 CTCNET-AS PJSC Rostelecom. Moscow branch
Unclassified RIPE
Summary
Rostelecom
residential isp russia access
CTCNET-AS is the autonomous system for PJSC Rostelecom, the largest digital services provider in Russia.
What it's used for
- The address space carries residential access traffic, evidenced by reverse DNS entries such as
pppoe-static.mosoblast.rt.ruandipoe-static.mosoblast.rt.ru. - With 46,592 IPv4 addresses announced across 18 prefixes and only 5 observed neighbours, the high address-to-neighbour ratio indicates an access network serving end-users rather than a transit provider.
Notable
- Registrants consistently identify the holder as PJSC Rostelecom or its predecessor OJSC Rostelecom, aligning with the AS handle
CTCNET-AS. - The inventory is finely subdivided into 18 IPv4 prefixes and 1 IPv6 prefix, reflecting a large, segmented corporate estate for a major national operator.
- Rostelecom underwent a rebranding in 2021, transitioning from OJSC to PJSC status, which is reflected in the varying registrant names across the prefix history.
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
1 upstream, 4 downstream and 6 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS12389 | PJSC Rostelecom | 1,275 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 18 prefixes · 46.59K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| RU | Russian Federation | 19 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS25515- Registry name
- CTCNET-AS
- Registrant
- PJSC Rostelecom
- Abuse contact
- abuse@rt.ru
- Registered
- 2002-12-18
- Last changed
- 2026-05-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 21 valid, 0 with no ROA
- ROAs
- 22 authorising AS25515
- ASPA
- no ASPA record
- IRR
- 100% registered · 21 of 21 announcements
- Route objects
- 28 naming AS25515
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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