Autonomous system
AS13101 TNG-AS TNG Stadtnetz GmbH
Residential RIPE
Summary
TNG Stadtnetz
isp telecom infrastructure
A netname date with seven digits, where the month was written without its leading zero.
What it's used for
- A German regional carrier routing for a group of municipal utilities. 142,080 addresses across 33 IPv4 prefixes, four IPv6 prefixes, and 185 observed BGP neighbours.
Notable
- One netname reads
DE-TNGSTADTNETZ-2000308: seven digits, not the usual six or eight. - Others are dated
19951017,19960104,19990830,20001121,20021009and20050602. - Registrants include five separate municipal utility companies alongside the carrier itself.
- Seven of 18 sampled addresses returned names across three domains, including
0.8.93.62.dsl.xitylight.de, whose octets are reversed.
Interesting
- Seven digits can only be a date whose month was written as a single character. It is the same eight-digit convention with a leading zero dropped, and it proves the field is typed by hand rather than generated. Nothing validated it then and nothing has corrected it since.
- Eight-digit dates from 1995 and 1996 sit here beside six-digit ones elsewhere in this range. The two forms were never sequential eras; both were in use throughout.
- Five town utility companies routing through one carrier is the German municipal model in a single record. Each utility holds its own space under its own name, and the carrier supplies the path.
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 10 exchanges in 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.192.83 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.209.119 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.116.27 |
| KleyReX Internet Exchange | Frankfurt, Germany | 193.189.82.38 |
| SwissIX | Zurich, Switzerland | 2001:7f8:24::99 |
| DE-CIX Hamburg | Hamburg, Germany | 185.1.210.13 |
| Megaport Frankfurt IX | Frankfurt, Germany | 62.69.146.43 |
| Megaport Dusseldorf IX | Düsseldorf, Germany | 2001:7f8:8::332d:0:1 |
Transit providers
32 upstream, 11 downstream and 80 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 33 prefixes · 142K addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 37 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS13101- Registry name
- TNG-AS
- Registrant
- TNG Stadtnetz GmbH
- Abuse contact
- abuse@tng.de
- Registered
- 2002-09-20
- Last changed
- 2026-09-25
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 37 valid, 0 with no ROA
- ROAs
- 39 authorising AS13101
- ASPA
- no ASPA record
- IRR
- 100% registered · 37 of 37 announcements
- Route objects
- 450 naming AS13101
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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