Autonomous system
AS15974 VTT-AS ISP, Saratov, Russia.
Unclassified RIPE
Summary
TransTeleCom (Saratov)
isp telecom transit
Each reverse name ends with a three-letter code for the city the line terminates in.
What it's used for
- A regional arm of a national carrier. Twenty-six IPv4 prefixes and eighteen IPv6 prefixes announced from the Russian Federation, forty-five thousand three hundred and twelve addresses, across five observed BGP neighbours.
Notable
- Ten of eighteen queried addresses answered. Every name is the access protocol, then the four octets hyphenated, then a label marking the address as changeable, then three letters for a city, then a retail subdomain.
- Three different city codes appear among ten answers, so one block spans several towns.
- Nearly all netnames are a country code, the parent carrier's full brand, and a date, with the oldest from the very start of the century.
- One block breaks the pattern with the local brand, the access protocol and a city name spelled out, and lists three contacts where the others list two.
- The AS handle appends the letters for a provider, a city and a country, and ends with a full stop.
- The eighteen IPv6 prefixes are nested pieces of one range, from a
/36down to a/48.
Interesting
- Writing the access technology into the name tells any receiving network that the address belongs to a consumer line, which is exactly what mail and abuse systems want to know before deciding how to treat traffic from it.
- A local brand surviving on one block while the parent's name covers the rest is what a regional operator looks like a few years after being absorbed.
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 7 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS20485 | Joint Stock Company TransTeleCom | 1,579 |
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
IPv4 26 prefixes · 45.31K addresses IPv6 18 prefixes
| Country | Name | Prefixes |
|---|---|---|
| RU | Russian Federation | 44 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15974- Registry name
- VTT-AS
- Registrant
- Joint Stock Company TransTeleCom
- Abuse contact
- abuse@ttk.ru
- Registered
- 2002-08-16
- Last changed
- 2025-01-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 28 valid, 0 with no ROA
- ROAs
- 9 authorising AS15974
- ASPA
- 2 declared providers
- IRR
- 100% registered · 28 of 28 announcements
- Route objects
- 31 naming AS15974
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