asn.dev

Autonomous system

AS25098 NETCALIBRE

Unclassified RIPE

IPv4 addresses 25.86K 10 prefixes
IPv6 prefixes 17 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 1 recorded by PCH
Upstreams 9 4 downstream
Flagged prefixes 0 none

Summary

Netcalibre

United Kingdom · AI-generated

hosting business nsp

The AS handle NETCALIBRE is held by Netcalibre Ltd.

What it's used for

  • The address space carries hosting and business services, evidenced by the reverse DNS record 0.212.230.213.client.lchost.net and netnames such as UK-WOAF-20030512 and WOAF-CORE.
  • The AS announces 25,600 IPv4 addresses across 15 prefixes and 17 IPv6 prefixes, while maintaining 39 observed neighbours; this ratio of moderate address space against a significant number of peers indicates a network service provider role.

Notable

  • Registrants for the majority of prefixes align with the announcer, specifically Netcalibre Ltd, though some blocks are registered to third parties including Moldtelecom SA, The Burstfire Hostmaster, Tigrisnet Abuse, and Contrust Solutions S.R.L.
  • The address inventory is fragmented, consisting of 15 distinct IPv4 prefixes ranging from a /19 down to multiple /24s, alongside a finely subdivided IPv6 allocation under the 2a01:70::/33 block.

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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
London Network Access PointLondon, United Kingdom5.57.82.36

Transit providers

9 upstream, 4 downstream and 22 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1299Arelion Sweden AB397
AS174Cogent Communications, LLC163
AS6939Hurricane Electric LLC99
AS20473The Constant Company, LLC61
AS24482SG.GS12
AS48185team.blue NV12
AS50300CustodianDC Limited12
AS33891Core-Backbone GmbH10

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, 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 10 prefixes · 25.86K addresses IPv6 17 prefixes

CountryNamePrefixes
GBUnited Kingdom27

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS25098
Registry name
NETCALIBRE
Registrant
NETCALIBRE
Abuse contact
abuse@lchost.net
Registered
2002-07-24
Last changed
2024-06-07
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 14 valid, 0 with no ROA
ROAs
23 authorising AS25098
ASPA
4 declared providers
IRR
93% registered · 13 of 14 announcements 1 other origin
Route objects
22 naming AS25098

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 1,782 prefixes, as published 2026-10-16. 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