Network report
Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.
Checking routing, RPKI, reverse DNS, blocklists and the registry. This usually takes 3 to 10 seconds.
Warning: AS58273 (B4RN-AS) announces 48 IPv4 and 21 IPv6 prefixes. 1 warning
| AS page | AS58273 |
|---|---|
| Holder | B4RN-AS Broadband for the Rural North Limited. |
| Allocation | RIPE NCC, United Kingdom (GB), allocated 2012-06-12 |
| Prefixes (IPv4 / IPv6) | 48 / 21 |
| RPKI valid | 100% (69 / 69) |
| Upstreams and peers | 51 |
| Peering policy | Open |
What to fix
-
Warning
4 of 69 announced prefixes have no IRR route object: 5.83.8.0/23, 2a01:6246::/34, 185.243.107.0/24, 88.97.156.0/24.
Many networks build their prefix filters from IRR data; without route objects some of them drop the routes.
Fix: Create route (IPv4) and route6 (IPv6) objects with origin AS58273 in your RIR’s IRR database (or RADB).
route: 5.83.8.0/23 origin: AS58273 route6: 2a01:6246::/34 origin: AS58273 route: 185.243.107.0/24 origin: AS58273
Checks
Routing and RPKI 4 of 69 announced prefixes have no IRR route object: 5.83.8.0/23, 2a01:6246::/34, 185.243.107.0/24, 88.97.156.0/24.
- Pass: AS58273 announces 48 IPv4 and 21 IPv6 prefixes.
- Pass: All 69 announced prefixes are RPKI valid.
- Warning: 4 of 69 announced prefixes have no IRR route object: 5.83.8.0/23, 2a01:6246::/34, 185.243.107.0/24, 88.97.156.0/24.
- Info: 51 upstreams and peers, 1 downstream networks seen.
| Holder | B4RN-AS Broadband for the Rural North Limited. |
|---|---|
| IPv4 prefixes | 48 |
| IPv6 prefixes | 21 |
| RPKI | 69 valid |
| Without IRR route object | 4 |
| Downstream networks | 1 |
Announced prefixes 69
Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru
Open in ASN & BGP prefix lookupRegistration Found at rdap.db.ripe.net.
- Pass: Found at rdap.db.ripe.net.
| Name | B4RN-AS |
|---|---|
| Handle | AS58273 |
| Range | AS58273 |
| Status | active |
| Registered | 2012-06-12T15:05:35Z |
| Last changed | 2025-04-30T14:26:52Z |
| Abuse contact | abuse@b4rn.org.uk |
| Registry (RIR) | RIPE NCC |
|---|---|
| Country | United Kingdom (GB) |
| Delegated on | 2012-06-12 |
| Status | Allocated |
| Delegated range | AS58273 |
Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.
| Role | Name | |
|---|---|---|
| registrant | B4RN-MNT | |
| registrant | Broadband for the Rural North Limited. | |
| registrant | RIPE-NCC-END-MNT | |
| abuse | B4RN Ripe Admin | abuse@b4rn.org.uk |
Source: https://rdap.db.ripe.net/autnum/58273. Registration data from rdap.db.ripe.net, shown under its terms of use (terms): not for marketing or bulk collection. Personal contacts in this registry are not shown.
Open in WHOIS / RDAP lookupPeeringDB AS58273 is in PeeringDB as Broadband for the Rural North (B4RN).
- Pass: AS58273 is in PeeringDB as Broadband for the Rural North (B4RN).
- Info: Peering policy: Open.
- Info: Present at 5 internet exchanges with 5 ports (230G in total).
| Network | Broadband for the Rural North (B4RN) (B4RN) |
|---|---|
| AS number | AS58273 |
| Type | Non-Profit, Regional |
| Website | https://b4rn.org.uk/ |
| IRR as-set | AS-B4RN |
| Prefixes (IPv4 / IPv6) | 60 / 40 |
| Traffic | Mostly Inbound |
| Peering policy | Open |
| Locations | Preferred |
| Ratio required | No |
| Contracts | Not Required |
| Last updated | 2025-05-23 |
| Policy | peering@b4rn.org.uk |
|---|---|
| NOC | noc@b4rn.org.uk |
| Abuse | abuse@b4rn.org.uk |
Source: PeeringDB. Results are cached for an hour.
Open in PeeringDB lookup