HomePrefix Lookup81.128.0.0/11

81.128.0.0/11

🇬🇧
IPv4RIPENCCallocatedAS2856BT-UK-AS British Telecommunications PLC RPKI Valid
CIDR
81.128.0.0/11
IP Version
IPv4
Addresses
2M
Mask
/11 (255.224.0.0)
Country
🇬🇧 United Kingdom
City
Newport
RIR
RIPENCC
Status
allocated
Allocated
7/25/2002

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
81.128.0.0/11AS2856BT-UK-AS British Telecommunications PLC Valid
RIPE
6/13/2026

Covering Prefix

1 less-specific announcement
PrefixOrigin ASRPKIIRRLast Seen
81.128.0.0/12AS2856BT-UK-AS British Telecommunications PLC Valid—6/13/2026

RPKI ROAs

1
PrefixOriginMax LengthTrust Anchor
81.128.0.0/11AS2856/11ripe

IRR Route Objects

1
OriginRegistryMaintainerModified
AS2856RIPEBTNET-INFRA-MNT7/31/2014

More Specific Prefixes

100
PrefixASCountryStatus
81.144.0.0/12🇬🇧GBassigned
81.128.0.0/12AS2856🇬🇧GBassigned
81.154.0.0/15🇬🇧GBassigned
81.156.0.0/15🇬🇧GBassigned
81.141.0.0/16🇬🇧GBassigned
81.132.0.0/16🇬🇧GBassigned
81.158.0.0/16🇬🇧GBassigned
81.153.0.0/16🇬🇧GBassigned
81.151.0.0/16🇬🇧GBassigned
81.129.0.0/16🇬🇧GBassigned
81.159.0.0/16🇬🇧GBassigned
81.128.0.0/17🇬🇧GBassigned
81.135.0.0/17🇬🇧GBassigned
81.152.0.0/17🇬🇧GBassigned
81.149.0.0/17🇬🇧GBassigned
81.136.0.0/17🇬🇧GBassigned
81.140.0.0/17🇬🇧GBassigned
81.140.192.0/18🇬🇧GBassigned
81.149.128.0/18🇬🇧GBassigned
81.135.192.0/18🇬🇧GBassigned
81.152.128.0/18🇬🇧GBassigned
81.146.0.0/18🇬🇧GBassigned
81.133.0.0/19🇬🇧GBassigned
81.133.128.0/19🇬🇧GBassigned
81.139.96.0/19🇬🇧GBassigned
81.134.160.0/19🇬🇧GBassigned
81.139.64.0/19🇬🇧GBassigned
81.145.64.0/19🇬🇧GBassigned
81.131.96.0/19🇬🇧GBassigned
81.139.128.0/19🇬🇧GBassigned
81.131.160.0/19🇬🇧GBassigned
81.131.192.0/19🇬🇧GBassigned
81.146.96.0/19🇬🇧GBassigned
81.152.192.0/19🇬🇧GBassigned
81.146.192.0/19🇬🇧GBassigned
81.148.64.0/19🇬🇧GBassigned
81.148.160.0/19🇬🇧GBassigned
81.148.128.0/19🇬🇧GBassigned
81.130.128.0/19🇬🇧GBassigned
81.130.160.0/19🇬🇧GBassigned
81.130.224.0/19🇬🇧GBassigned
81.140.160.0/19🇬🇧GBassigned
81.148.224.0/19🇬🇧GBassigned
81.135.160.0/19🇬🇧GBassigned
81.146.128.0/19🇬🇧GBassigned
81.139.224.0/19🇬🇧GBassigned
81.139.160.0/19🇬🇧GBassigned
81.148.0.0/19🇬🇧GBassigned
81.146.160.0/19🇬🇧GBassigned
81.136.160.0/19🇬🇧GBassigned
81.149.224.0/19🇬🇧GBassigned
81.139.0.0/19🇬🇧GBassigned
81.139.192.0/19🇬🇧GBassigned
81.148.32.0/19🇬🇧GBassigned
81.133.80.0/20🇬🇧GBassigned
81.133.112.0/20🇬🇧GBassigned
81.145.96.0/20🇬🇧GBassigned
81.133.32.0/20🇬🇧GBassigned
81.145.112.0/20🇬🇧GBassigned
81.131.224.0/20🇬🇧GBassigned
81.133.160.0/20🇬🇧GBassigned
81.136.128.0/20🇬🇧GBassigned
81.144.0.0/20🇬🇧GBassigned
81.131.80.0/20🇬🇧GBassigned
81.131.128.0/20🇬🇧GBassigned
81.138.0.0/20🇬🇧GBassigned
81.144.48.0/20🇬🇧GBassigned
81.134.80.0/20🇬🇧GBassigned
81.137.240.0/20🇬🇧GBassigned
81.134.48.0/20🇬🇧GBassigned
81.137.224.0/20🇬🇧GBassigned
81.130.192.0/20🇬🇧GBassigned
81.149.208.0/20🇬🇧GBassigned
81.152.224.0/20🇬🇧GBassigned
81.130.0.0/20🇬🇧GBassigned
81.130.80.0/20🇬🇧GBassigned
81.133.224.0/20🇬🇧GBassigned
81.130.96.0/20🇬🇧GBassigned
81.137.192.0/20🇬🇧GBassigned
81.147.128.0/20🇬🇧GBassigned
81.147.96.0/20🇬🇧GBassigned
81.147.160.0/20🇬🇧GBassigned
81.133.208.0/20🇬🇧GBassigned
81.134.0.0/20🇬🇧GBassigned
81.136.208.0/20🇬🇧GBassigned
81.134.32.0/20🇬🇧GBassigned
81.134.224.0/20🇬🇧GBassigned
81.133.192.0/20🇬🇧GBassigned
81.136.224.0/20🇬🇧GBassigned
81.147.0.0/20🇬🇧GBassigned
81.148.96.0/20🇬🇧GBassigned
81.135.144.0/20🇬🇧GBassigned
81.133.96.0/21🇬🇧GBassigned
81.133.104.0/21🇬🇧GBassigned
81.133.72.0/21🇬🇧GBassigned
81.134.208.0/21🇬🇧GBassigned
81.133.48.0/21🇬🇧GBassigned
81.134.216.0/21🇬🇧GBassigned
81.136.144.0/21🇬🇧GBassigned
81.131.240.0/21🇬🇧GBassigned
Origin ASN
AS2856
BT-UK-AS British Telecommunications PLC
Geolocation
Country🇬🇧United KingdomGB
RegionWales
CityNewport
Coordinates51.5886, -3.0053 ↗
Abuse Contact
API
Open
GEThttps://api.ipctl.io/v1/prefix/81.128.0.0/11

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/81.128.0.0/11" | jq
External Links
RIPEstat Hurricane Electric BGP