Autonomous system
AS57567 DUMARCA
Unclassified RIPE
Summary
Dumarca
isp residential mobile im
The AS handle DUMARCA is held by Dumarca North South West Limited.
What it's used for
- The address space carries residential and mobile subscriber traffic, evidenced by the netname
IM-NORTH-20150130and the registrant "Legal team; North South West Limited; IT Team; Abuse-C Role". - The AS announces 1024 IPv4 addresses across 1 prefix (185.86.44.0/22) with 3 observed neighbours, a ratio consistent with an access network serving local subscribers rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs for Dumarca's fixed-line and mobile services in the Isle of Man.
Notable
- The registrant "North South West Limited" aligns with the announcer Dumarca North South West Limited, confirming the identity of the operator.
- The address inventory is a single /22 block, indicating a compact, self-contained estate typical of a regional ISP.
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 2026-10-12, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| IM | Isle of Man | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS57567- Registry name
- DUMARCA
- Registrant
- lir-im-north-1-MNT
- Abuse contact
- lir@silverspin.com
- Registered
- 2011-12-01
- Last changed
- 2026-04-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 6 valid, 0 with no ROA
- ROAs
- 6 authorising AS57567
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 6 naming AS57567
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: 436 networks and 1,769 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