AS13205
British Telecommunications Limited
AS13205 is British Telecommunications Limited. It announces 16,896 IPv4 addresses in 14 prefixes, and 0 IPv6 prefixes.
United Kingdom· RIPE· allocated 2000-05-04· hosting
16,896
IPv4 addresses announced
14
IPv4 prefixes
0
IPv6 prefixes
0.00%
of its routes RPKI-valid
16,896
of its IPv4 geolocated
2
countries
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- The Netherlands12,032 · 71.21%
- United Kingdom4,864 · 28.79%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UNSPECIFIED
- name
- British Telecommunications Limited
- org
- ORG-BT4-RIPE
- org name
- British Telecommunications Limited
- org address
- pp HWJ380, PO Box 78961 1 Braham Street, E1W 9TD, London, UNITED KINGDOM
- org country
- GB
- country
- GB
- source
- ripe
- status
- ASSIGNED
- updated
- 2017-11-15
- descr
- BTWWIDC-H Autonomous System / BT Global Services DCS WorldWide Internet Data Centre / Amsterdam
- maintainer
- RIPE-NCC-END-MNT|ICH-MNT
- abuse name
- BT Corporate Registry
- abuse email
- protect@bt.com
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- 0.05%
- None here
- None here
- None here
- None here
- None here
- None here
- Hosting IP1,2807.58%
- None here
- None here
- None here
- None here
- None here
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 31.11.56.0/23 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.0.0/20 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.0.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.5.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.6.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.7.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.9.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.10.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 78.109.11.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 217.140.0.0/20 | The Netherlands | not found | 16 | 2026-10-02 |
| 217.140.12.0/22 | The Netherlands | not found | 16 | 2026-10-02 |
| 217.140.12.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 217.140.13.0/24 | The Netherlands | not found | 16 | 2026-10-02 |
| 217.140.32.0/19 | United Kingdom | not found | 16 | 2026-10-02 |
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