Autonomous system
AS12912 TM
Unclassified RIPE
Summary
T-Mobile Polska
mobile telecom isp
A national mobile carrier whose address blocks are still named after the brand it replaced.
What it's used for
- The mobile network of a Polish operator. 1,092,608 addresses across 209 IPv4 prefixes, 19 IPv6 prefixes, and 316 observed BGP neighbours.
Notable
- Eight of the twelve sampled blocks carry the bare netname
ERANET, with no date and no country prefix. - Two more are
PL-ERANET-20090401andPL-ERANET-20100203. - Two are
PL-ENERGIS-20010801andPL-ENERGIS-20020903, registered to a different operator's IP team alongside the current holder. - The AS handle is
TM. - Fifteen of eighteen sampled addresses returned names, in three forms:
178.180.128.0.nat.umts.dynamic.t-mobile.pl,37.31.64.0.mobile.internet.t-mobile.pland188.147.191.254.mobile.static.t-mobile.pl.
Interesting
ERANETnames a mobile brand that no longer exists. The company rebranded, the reverse names were all updated to the new name, and the netnames were left exactly as they were. Reverse DNS is customer-facing so it gets fixed; netnames are seen by almost nobody, so they become the most reliable record of what a company used to be called.- The reverse names sort subscribers into three classes and say so plainly: carrier NAT over the mobile network, ordinary mobile internet, and static addressing. Anyone receiving traffic can tell which kind of connection it came from before doing anything else, which is exactly what abuse and fraud systems use these names for.
- The
ENERGISblocks are a fixed-line operator absorbed into a mobile one, and both companies' contacts are still listed on them.
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
Recorded at 4 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.194.32 |
| TPIX - Internet Exchange | Warsaw, Poland | 195.149.232.56 |
| Equinix Internet Exchange Warsaw | Warsaw, Poland | 195.182.218.156 |
| Thinx IX | Warsaw, Poland | 212.91.1.14 |
Transit providers
17 upstream, 204 downstream and 251 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 209 prefixes · 1.09M addresses IPv6 19 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 228 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12912- Registry name
- TMPL
- Registrant
- AS12912-MNT
- Abuse contact
- abuse@t-mobile.pl
- Registered
- 2002-07-16
- Last changed
- 2022-03-23
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 84% valid · 42 valid, 8 with no ROA
- ROAs
- 56 authorising AS12912
- ASPA
- no ASPA record
- IRR
- 100% registered · 50 of 50 announcements
- Route objects
- 100 naming AS12912
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 1,775 prefixes, as published 2026-10-11. 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