Autonomous system
AS12732 GUTCON-NET Carrier51 GmbH, GutCon GmbH
Unclassified RIPE
Summary
GutCon / Carrier51
transit hosting business
Twenty-three IPv6 prefixes against four IPv4 ones, and a hostname that names the firewall model.
What it's used for
- Carrier and hosting services in Germany. 1,792 addresses in four IPv4 prefixes, 23 IPv6 prefixes, and 124 observed BGP neighbours.
Notable
- The IPv6 announcements out of
2001:bf0form a doubling ladder: two/48s, then a/47,/46,/45,/44and/43, under a/42. - The four IPv4 blocks belong to four different holders: SDV Server-Services, GutCon itself, D-hosting die Rackspace & Connectivity GmbH under
DE-BBTT-980716, andMAGHAN-NET-2. - Six sampled addresses answered, under two domains:
all.deandmind.de. - The names include
ae10.dh5148a.ak.all.de,srx345.hh.all.de,isp-res-net.mind.deandboerde-tunnel4.mind.de.
Interesting
- 1,792 IPv4 addresses and 23 IPv6 prefixes is the ratio the protocol was meant to produce, and almost nobody has it. The operator ran out of one and stopped trying, then took as much of the other as it needed, and the routing table shows a network whose future and past are visible side by side.
srx345names a specific firewall product line in public DNS, andae10is an aggregated Ethernet bundle. Interface names of this kind are written for the engineers who maintain the box, and they tell anyone else what hardware sits at that address before a single packet is sent at it.- Four blocks, four holders, one announcer. A carrier with 124 neighbours and almost no address space of its own is selling routing rather than addresses, which is the purest form of the transit business.
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 5 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.196.14 |
| Berlin Commercial Internet Exchange | Berlin, Germany | 193.178.185.1 |
| Megaport Dusseldorf IX | Düsseldorf, Germany | 194.146.118.30 |
| Megaport Hamburg IX | Hamburg, Germany | 193.42.155.7 |
| Megaport Berlin IX | Berlin, Germany | 194.9.117.2 |
Transit providers
19 upstream, 7 downstream and 49 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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.79K addresses IPv6 23 prefixes
| Country | Name | Prefixes |
|---|---|---|
| DE | Germany | 27 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12732- Registry name
- GUTCON-NET
- Registrant
- ALL-MNT
- Abuse contact
- abuse@all.de
- Registered
- 2002-07-24
- Last changed
- 2025-12-02
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 12 valid, 0 with no ROA
- ROAs
- 20 authorising AS12732
- ASPA
- 8 declared providers
- IRR
- 92% registered · 11 of 12 announcements 1 other origin
- Route objects
- 22 naming AS12732
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: 442 networks and 1,773 prefixes, as published 2026-10-13. 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