Autonomous system
AS12789 DMG-MEDIA-LIMITED
Unclassified RIPE
Summary
DMG Media
media enterprise business
Eight prefixes carrying three generations of a newspaper group's name.
What it's used for
- Corporate networking for a British newspaper publisher. 3,584 addresses across eight IPv4 prefixes, five observed BGP neighbours, and no IPv6 announced.
Notable
- Seven of the eight blocks sit in
213.165; the largest is195.234.240.0/22. - The netnames disagree about who owns them:
ASSOCIATED-NEWSPAPERS-LTD,UK-ASSOCIATED-19991228registered to Associated Newspapers Limited,DMGT-16, andDMG-Media-Limited-t2. - Eighteen addresses were sampled and none returned a name.
Interesting
- Three names for one company sit in this inventory: the newspaper business it started as, the holding-group initials, and the current media brand. Each was current when its block was filed, and the registry keeps all of them because a netname is written once. The corporate history is legible in the order the address space was acquired.
- Eight prefixes for 3,584 addresses, seven of them adjacent in the same
/19-sized neighbourhood, means space assigned piecemeal over years rather than in one allocation. A publisher's network grows by projects — a new site, a new title, a new data centre — and each one asks for a little more. - Five neighbours is more upstream diversity than a corporate network usually carries. For a publisher, the front page being unreachable is the outage that matters, and the cheapest insurance against it is another provider.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 3.58K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS12789- Registry name
- DMG-Media-Limited
- Registrant
- AS1849-MNT
- Abuse contact
- netcom@assocnews.co.uk
- Registered
- 1970-01-01
- Last changed
- 2025-03-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 16 with no ROA
- ROAs
- 0 authorising AS12789
- ASPA
- no ASPA record
- IRR
- 100% registered · 16 of 16 announcements
- Route objects
- 43 naming AS12789
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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