Autonomous system
AS50928 SYNTSIB-AS
Unclassified RIPE
Summary
MegaFon
mobile residential business telecom
The AS handle SYNTSIB-AS is held by PJSC MegaFon.
What it's used for
- The address space carries fixed-line and mobile subscriber traffic, evidenced by netnames such as
MF-GNOC-SF-Fixed-20150213,MF-SIB, andMF-SF-AS50928-FIX. - The AS announces 10,496 IPv4 addresses across 12 prefixes and 2 IPv6 prefixes, with 24 observed neighbours, indicating a large access network serving end-users rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs, including mobile data, fixed broadband, and VoIP services for MegaFon's customer base in Russia.
Notable
- Registrants consistently identify PJSC MegaFon and its Network Operation Center (NOC) branches, including GNOC East and the Sibirian Branch, aligning with the announcer.
- The address inventory is finely subdivided into /21, /22, /23, and /24 blocks, reflecting site-by-site segmentation for different regional branches and service types within the corporate estate.
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, 23 downstream and 27 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS31133 | PJSC MegaFon | 2,640 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 13 prefixes · 10.75K addresses IPv6 2 prefixes
| Country | Name | Prefixes |
|---|---|---|
| RU | Russian Federation | 15 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS50928- Registry name
- SYNTSIB-AS
- Registrant
- MEGAFON-EAST-MNT
- Abuse contact
- abuse-mailbox@megafon.ru
- Registered
- 2010-04-26
- Last changed
- 2026-10-01
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 48 valid, 0 with no ROA
- ROAs
- 49 authorising AS50928
- ASPA
- no ASPA record
- IRR
- 100% registered · 48 of 48 announcements
- Route objects
- 52 naming AS50928
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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