Autonomous system
AS8698 Nationwide Building Society
Unclassified RIPE
Summary
Nationwide Building Society
enterprise finance legacy
Nationwide Building Society (NATIONWIDE BUILDING SOCIETY) is the world's largest building society — a UK member-owned mutual offering mortgages, savings and current accounts. This AS carries the society's own corporate network.
What it's used for
- Internal enterprise networking: branches, contact centres, datacentres and the back-office systems of a retail bank. Around 131,000 IPv4 addresses, which is two full legacy /16s (
155.131.0.0/16and155.192.0.0/16), deaggregated into about 109 BGP announcements. - Both blocks are registered to Nationwide itself in the RIPE database (
NBSNET/NBSNET1, GB) under the legacy maintainer — pre-RIR class-B space, later brought under RIPE administration.
Notable
- Zero rDNS is delegated anywhere in the space. For an enterprise this is normal and deliberate: nothing here is meant to be reached from the public internet, and the address count reflects a large internal estate, not a large public presence.
- Only four BGP neighbours and no downstreams — Nationwide buys transit and announces only its own network. Nothing about this AS is an ISP, hosting provider or eyeball network despite its size.
- No IPv6 is announced.
Interesting
- A large legacy /16 pair in the hands of a single UK financial mutual is a reminder of how early-1990s address policy worked: sizeable organisations got class-B blocks essentially for the asking, and many still hold them.
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 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 131K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8698- Registry name
- UNSPECIFIED
- Registrant
- NBS-NSS-MNT
- Abuse contact
- NetworksITOperations@nationwide.co.uk
- Registered
- 1970-01-01
- Last changed
- 2018-01-17
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 109 with no ROA
- ROAs
- 2 authorising AS8698
- ASPA
- no ASPA record
- IRR
- 100% registered · 109 of 109 announcements
- Route objects
- 583 naming AS8698
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 1,771 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