Autonomous system
AS58273 B4RN-AS
Unclassified RIPE Non-Profit
Summary
B4RN
residential fibre community isp
B4RN-AS is operated by Broadband for the Rural North Limited.
What it's used for
- The address space carries residential and business fibre broadband, evidenced by reverse DNS entries pointing to
reverse.b4rn.org.ukand netnames such asUK-B4RN-24082023andBolton-By-Bowland-Pool-1. - The AS announces 23,296 IPv4 addresses across 15 prefixes and 22 IPv6 prefixes, while maintaining 90 observed neighbours; this ratio of address inventory to peering relationships indicates an access network rather than a transit provider.
- Traffic from this AS consists of subscriber eyeballs and local business endpoints, as B4RN is a community-led ISP delivering symmetrical gigabit full-fibre broadband to rural areas in northern England.
Notable
- Registrants for the majority of prefixes align with the announcer, listing
B4RN Ripe Admin; Broadband for the Rural North Limited, though some blocks show different registrants such asInterfire LtdandAbuse-C Role. - The address inventory is finely subdivided into multiple /20, /21, and /22 blocks, reflecting a site-by-site or regional segmentation of the 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
Internet exchanges
Recorded at 4 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| LINX LON1 | London, United Kingdom | 195.66.226.126 |
| LINX Manchester | Manchester, United Kingdom | 195.66.244.60 |
| Leeds Internet Exchange | Leeds, United Kingdom | 91.217.231.48 |
| LINX Scotland | Scotland, United Kingdom | 195.66.246.26 |
Transit providers
25 upstream, 1 downstream and 38 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 15 prefixes · 23.30K addresses IPv6 22 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 37 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS58273- Registry name
- B4RN-AS
- Registrant
- B4RN-MNT
- Abuse contact
- abuse@b4rn.org.uk
- Registered
- 2012-06-12
- Last changed
- 2025-04-30
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Broadband for the Rural North (B4RN)
- Also known as
- B4RN
- Network type
- Non-Profit
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-B4RN- Present at
- 5 exchanges
- Facilities
- 5 facilities
- Website
- https://b4rn.org.uk/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 69 valid, 0 with no ROA
- ROAs
- 16 authorising AS58273
- ASPA
- no ASPA record
- IRR
- 100% registered · 69 of 69 announcements
- Route objects
- 83 naming AS58273
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 1,772 prefixes, as published 2026-10-15. 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