HomeASN LookupAS13205

AS13205

🇬🇧

British Telecommunications PLCORG-BT4-RIPE

BTWWIDC-H Autonomous System

RIPENCCallocated
Announced Prefixes (BGP)
16total
16 IPv40 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)43,264
Announced (BGP)20,992
IPv6 Addresses ⓘ
Allocated (RIR)9.4×10^31
Announced (BGP)0
Prefix Limit (IPv4)
50
Prefix Limit (IPv6)
5
Country
🇬🇧 GB
RIR
RIPENCC
Status
allocated
Allocated
5/4/2000

Announced Prefixes

(BGP)16
|
Prefix
RPKI
IRR
Last Seen
31.11.56.0/23
No ROA
RIPE
5/25/2026
78.109.0.0/20
No ROA
RIPE
5/25/2026
78.109.0.0/24
No ROA
RIPE
5/25/2026
78.109.5.0/24
No ROA
RIPE
5/25/2026
78.109.6.0/24
No ROA
RIPE
5/25/2026
78.109.7.0/24
No ROA
RIPE
5/25/2026
78.109.9.0/24
No ROA
RIPE
5/25/2026
78.109.10.0/24
No ROA
RIPE
5/25/2026
78.109.11.0/24
No ROA
RIPE
5/25/2026
137.213.239.0/24
No ROA
RIPE
5/25/2026
1–10 of 16
1 / 2

Allocated Prefixes

(RIR)68
Prefix
Country
RIR
Status
31.11.56.0/21🇬🇧 GBRIPENCCallocated
31.11.56.0/23🇳🇱 NLRIPEassigned
78.109.0.0/20🇬🇧 GBRIPENCCallocated
78.109.5.0/24🇳🇱 NLRIPEassigned
78.109.6.0/24🇳🇱 NLRIPEassigned
78.109.7.0/24🇳🇱 NLRIPEassigned
78.109.9.0/24🇳🇱 NLRIPEassigned
78.109.10.0/24🇳🇱 NLRIPEassigned
78.109.11.0/24🇳🇱 NLRIPEassigned
192.31.31.0/24🇬🇧 GBRIPENCCassigned
1–10 of 68
1 / 7
ASPA
No ASPA
Abuse Contact
External Links
RIPE WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/13205

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/13205" | jq