asn.dev

Autonomous system

AS51926 P1C-AS

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

PageOne Communications

United Kingdom · AI-generated

business messaging critical communications

P1C-AS is operated by PageOne Communications Ltd.

What it's used for

  • The address space carries business and critical messaging services, with the netname P1C-NET and registrant FOURD DC; PageOne Communications Ltd; Abuse-C Role associated with the single announced prefix.
  • The AS announces 256 IPv4 addresses across 1 prefix in the United Kingdom, with 2 observed neighbours, indicating a small-scale business network rather than a transit or large access provider.
  • Traffic from this AS consists of business and critical messaging services for organisations including the NHS, emergency services, government, and large enterprises.

Notable

  • Registrants align with the announcer, listing FOURD DC; PageOne Communications Ltd; Abuse-C Role for the prefix 91.220.160.0/24.
  • PageOne Communications Ltd trades as CRITICO, as indicated by its registration with the UK government procurement authority.
  • The address inventory consists of a single /24 block, representing a compact corporate estate.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS50300CustodianDC Limited31
AS13009Redcentric Solutions Ltd28

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

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
GBUnited Kingdom1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51926
Registry name
P1C-AS
Registrant
MNT-4DDATACENTRES
Abuse contact
enquiries@pageone.co.uk
Registered
2010-11-30
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS51926
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS51926

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 1,784 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

Cross-check