AS12912 — TM

AS12912 announces 190 IPv4 prefixes covering 1,092,608 addresses and 17 IPv6 prefixes.

About this network

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-20090401 and PL-ERANET-20100203.
• Two are PL-ENERGIS-20010801 and PL-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.pl and 188.147.191.254.mobile.static.t-mobile.pl.

Interesting

• ERANET names 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 ENERGIS blocks 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.

Announced prefixes

• 37.30.0.0/15
• 46.204.0.0/15
• 62.29.128.0/17
• 62.152.128.0/19
• 78.133.128.0/20
• 78.133.148.0/22
• 78.133.152.0/24
• 78.133.154.0/23
• 78.133.156.0/22
• 78.133.160.0/22
• 78.133.164.0/23
• 78.133.167.0/24
• 78.133.169.0/24
• 78.133.172.0/22
• 78.133.176.0/20
• 78.133.192.0/22
• 78.133.197.0/24
• 78.133.198.0/23
• 78.133.200.0/21
• 78.133.208.0/20
• 78.133.224.0/22
• 78.133.229.0/24
• 78.133.230.0/23
• 78.133.232.0/22
• 78.133.236.0/24
• 78.133.238.0/23
• 78.133.240.0/22
• 78.133.244.0/23
• 78.133.247.0/24
• 78.133.248.0/21
• 83.220.96.0/19
• 85.202.56.0/23
• 85.219.128.0/21
• 85.219.136.0/22
• 85.219.140.0/23
• 85.219.143.0/24
• 85.219.144.0/22
• 85.219.149.0/24
• 85.219.150.0/23
• 85.219.152.0/21
• 85.219.160.0/21
• 85.219.168.0/22
• 85.219.172.0/24
• 85.219.174.0/23
• 85.219.176.0/20
• 85.219.193.0/24
• 85.219.194.0/23
• 85.219.196.0/22
• 85.219.200.0/21
• 85.219.210.0/23
• 85.219.212.0/24
• 85.219.214.0/23
• 85.219.217.0/24
• 85.219.218.0/23
• 85.219.220.0/22
• 85.219.224.0/22
• 85.219.228.0/24
• 85.219.230.0/23
• 85.219.232.0/21
• 85.219.240.0/22
• 85.219.248.0/21
• 89.174.0.0/20
• 89.174.16.0/21
• 89.174.24.0/24
• 89.174.28.0/22
• 89.174.34.0/23
• 89.174.36.0/22
• 89.174.40.0/21
• 89.174.48.0/20
• 89.174.64.0/21
• 89.174.72.0/23
• 89.174.74.0/24
• 89.174.76.0/22
• 89.174.80.0/20
• 89.174.96.0/21
• 89.174.104.0/22
• 89.174.110.0/23
• 89.174.112.0/22
• 89.174.117.0/24
• 89.174.118.0/23
• 89.174.120.0/21
• 89.174.128.0/19
• 89.174.160.0/23
• 89.174.162.0/24
• 89.174.164.0/22
• 89.174.168.0/21
• 89.174.176.0/21
• 89.174.185.0/24
• 89.174.186.0/23
• 89.174.188.0/22
• 89.174.192.0/19
• 89.174.224.0/22
• 89.174.230.0/23
• 89.174.232.0/21
• 89.174.240.0/20
• 91.213.239.0/24
• 91.223.23.0/24
• 94.42.0.0/18
• 94.42.64.0/19
• 94.42.96.0/22

and 107 more.

Upstream networks

• AS3320 Deutsche Telekom AG
• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS33891 Core-Backbone GmbH
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS57463 NetIX Communications JSC
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS34019 Hivane Association
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS12779 IT.Gate S.p.A.
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS29632 Netassist International EOOD
• AS17639 Converge ICT Solutions Inc.
• AS201054 Stowarzyszenie e-Poludnie
• AS213241 TECHIT.BE SRL

Downstream networks

• AS42763 FPUH Czajen Krzysztof Czaja
• AS61154 IDHosting Sp. z o. o.
• AS30851 Sileman Sp. z o.o.
• AS50599 DATASPACE P.S.A.
• AS15391 Sysclay Sp. z o. o.
• AS60448 Damian Giecko "COVERNET"
• AS51323 Polska Wytwornia Papierow Wartosciowych S.A.
• AS203845 Tide Software Sp. z o.o.
• AS56391 VIRTUAL TELECOM SP. Z O.O.
• AS207413 CONTACT.PL SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA
• AS203685 SGK PROJEKT Sp. z O.O.
• AS31229 Beyond.pl sp. z o.o.
• AS200999 CloudFerro S.A
• AS35538 Provider sp. z o.o.
• AS207593 Spoldzielnia ZODIAK
• AS60425 Capgemini Polska Sp. z o.o.
• AS39914 Narodowy Fundusz Zdrowia
• AS197472 UNIQA Towarzystwo Ubezpieczen S.A.
• AS57524 WEBTEAM informatyka sp. z o.o.
• AS206559 Jozwiak Wioletta trading as PPHU POKAL
• AS211047 Sieci Swiatlowodowe Sp. z o.o.
• AS29245 REYU.NET Sp. z o. o.
• AS33895 "T-Systems Polska Sp. z o.o."
• AS43638 Infover Sp. z o.o.
• AS25552 Getin Noble Bank Spolka Akcyjna

Adjacent networks

• AS33891 Core-Backbone GmbH
• AS1299 Arelion Sweden AB
• AS3320 Deutsche Telekom AG
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS30851 Sileman Sp. z o.o.
• AS42763 FPUH Czajen Krzysztof Czaja
• AS61154 IDHosting Sp. z o. o.
• AS48464 Futuro Exito Sp. z o.o.
• AS50599 DATASPACE P.S.A.
• AS15391 Sysclay Sp. z o. o.
• AS60448 Damian Giecko "COVERNET"
• AS48362 Stadtwerke Feldkirch
• AS37100 SEACOM Limited
• AS56391 VIRTUAL TELECOM SP. Z O.O.
• AS51323 Polska Wytwornia Papierow Wartosciowych S.A.
• AS212024 Marc Schmitt
• AS57463 NetIX Communications JSC
• AS17639 Converge ICT Solutions Inc.
• AS34019 Hivane Association
• AS20485 Joint Stock Company TransTeleCom
• AS24482 SG.GS
• AS203845 Tide Software Sp. z o.o.
• AS12779 IT.Gate S.p.A.
• AS207413 CONTACT.PL SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• TPIX - Internet Exchange — Warsaw, Poland
• Equinix Internet Exchange Warsaw — Warsaw, Poland
• Thinx IX — Warsaw, Poland