Autonomous system
AS50743 Commensus-Ltd-AS
Unclassified RIPE
Summary
Commensus Limited
business uk small
The AS handle COMMENSUS-LTD-AS is held by Commensus Limited.
What it's used for
- The address space carries the netname
COMMENSUSfor both announced prefixes, indicating a single corporate entity. - The inventory consists of 768 IPv4 addresses across 2 prefixes (91.205.250.0/23 and 91.205.249.0/24) with 0 IPv6 prefixes.
- With only 1 observed neighbour, the network operates as a small, self-contained business estate rather than a transit or large access provider.
- Traffic from this AS consists of internal corporate endpoints and services for Commensus Limited, a London-based computer services firm.
Notable
- Registrants for both prefixes are listed as Commensus Limited, matching the AS holder.
- The address inventory is compact and contiguous, comprising two small blocks that align with a single site or small office footprint.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS47474 | Virtual1 Limited | 3 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-07, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 0 prefixes
This network announces no prefixes we can see.
Registry
Allocation record
- Registry
- RIPE
- Handle
AS50743- Registry name
- Commensus-Ltd-AS
- Registrant
- COGENT-HM-MNT
- Abuse contact
- service.alerts@commensus.com
- Registered
- 2010-03-18
- Last changed
- 2026-08-03
- Allocation
- reserved
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS50743
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 3 announcements
- Route objects
- 1 naming AS50743
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: 454 networks and 1,852 prefixes, as published 2026-11-08. 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