HomePrefix Lookup81.23.48.0/20

81.23.48.0/20

🇬🇧
IPv4RIPENCCallocatedAS41230ASK4 ASK4 Limited RPKI Valid
CIDR
81.23.48.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇬🇧 United Kingdom
City
Sheffield
RIR
RIPENCC
Status
allocated
Allocated
2/14/2006

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
81.23.48.0/20AS41230ASK4 ASK4 Limited Valid
RIPE
5/31/2026

RPKI ROAs

1
PrefixOriginMax LengthTrust Anchor
81.23.48.0/20AS41230/20ripe

IRR Route Objects

1
OriginRegistryMaintainerModified
AS41230RIPEMNT-ASK48/18/2006

More Specific Prefixes

100
PrefixASCountryStatus
81.23.55.0/24🇬🇧GBassigned
81.23.63.128/25🇬🇧GBassigned
81.23.63.0/25🇬🇧GBassigned
81.23.62.192/26🇬🇧GBassigned
81.23.53.192/26🇬🇧GBassigned
81.23.51.64/26🇬🇧GBassigned
81.23.62.128/26🇬🇧GBassigned
81.23.59.128/26🇬🇧GBassigned
81.23.52.0/26🇬🇧GBassigned
81.23.60.64/26🇬🇧GBassigned
81.23.57.192/26🇬🇧GBassigned
81.23.48.128/26🇬🇧GBassigned
81.23.62.0/26🇬🇧GBassigned
81.23.56.0/26🇬🇧GBassigned
81.23.50.224/27🇬🇧GBassigned
81.23.49.192/27🇬🇧GBassigned
81.23.51.128/27🇬🇧GBassigned
81.23.54.96/27🇬🇧GBassigned
81.23.56.224/27🇬🇧GBassigned
81.23.54.160/27🇬🇧GBassigned
81.23.53.64/27🇬🇧GBassigned
81.23.51.32/27🇬🇧GBassigned
81.23.49.224/27🇬🇧GBassigned
81.23.60.128/27🇬🇧GBassigned
81.23.49.128/27🇬🇧GBassigned
81.23.54.64/27🇬🇧GBassigned
81.23.61.64/27🇬🇧GBassigned
81.23.49.160/27🇬🇧GBassigned
81.23.53.96/27🇬🇧GBassigned
81.23.51.160/27🇬🇧GBassigned
81.23.57.160/27🇬🇧GBassigned
81.23.54.192/27🇬🇧GBassigned
81.23.48.64/27🇬🇧GBassigned
81.23.61.0/27🇬🇧GBassigned
81.23.52.128/27🇬🇧GBassigned
81.23.53.160/27🇬🇧GBassigned
81.23.54.224/27🇬🇧GBassigned
81.23.61.192/27🇬🇧GBassigned
81.23.53.128/27🇬🇧GBassigned
81.23.59.192/27🇬🇧GBassigned
81.23.48.96/27🇬🇧GBassigned
81.23.54.128/27🇬🇧GBassigned
81.23.59.112/28🇬🇧GBassigned
81.23.52.224/28🇬🇧GBassigned
81.23.51.0/28🇬🇧GBassigned
81.23.58.208/28🇬🇧GBassigned
81.23.58.176/28🇬🇧GBassigned
81.23.58.160/28🇬🇧GBassigned
81.23.49.96/28🇬🇧GBassigned
81.23.48.192/28🇬🇧GBassigned
81.23.51.224/28🇬🇧GBassigned
81.23.48.48/28🇬🇧GBassigned
81.23.50.16/28🇬🇧GBassigned
81.23.54.16/28🇬🇧GBassigned
81.23.52.208/28🇬🇧GBassigned
81.23.52.192/28🇬🇧GBassigned
81.23.58.240/28🇬🇧GBassigned
81.23.50.208/28🇬🇧GBassigned
81.23.52.80/28🇬🇧GBassigned
81.23.52.160/28🇬🇧GBassigned
81.23.62.80/28🇬🇧GBassigned
81.23.61.240/28🇬🇧GBassigned
81.23.61.176/28🇬🇧GBassigned
81.23.49.16/28🇬🇧GBassigned
81.23.62.64/28🇬🇧GBassigned
81.23.59.48/28🇬🇧GBassigned
81.23.58.144/28🇬🇧GBassigned
81.23.48.16/28🇬🇧GBassigned
81.23.48.32/28🇬🇧GBassigned
81.23.58.224/28🇬🇧GBassigned
81.23.57.80/28🇬🇧GBassigned
81.23.57.128/28🇬🇧GBassigned
81.23.58.48/28🇬🇧GBassigned
81.23.58.80/28🇬🇧GBassigned
81.23.60.160/28🇬🇧GBassigned
81.23.50.192/28🇬🇧GBassigned
81.23.52.176/28🇬🇧GBassigned
81.23.48.240/28🇬🇧GBassigned
81.23.48.224/28🇬🇧GBassigned
81.23.61.96/28🇬🇧GBassigned
81.23.51.24/29🇬🇧GBassigned
81.23.50.72/29🇬🇧GBassigned
81.23.56.72/29🇬🇧GBassigned
81.23.60.8/29🇬🇧GBassigned
81.23.51.16/29🇬🇧GBassigned
81.23.51.208/29🇬🇧GBassigned
81.23.49.40/29🇬🇧GBassigned
81.23.50.168/29🇬🇧GBassigned
81.23.50.32/29🇬🇧GBassigned
81.23.50.184/29🇬🇧GBassigned
81.23.51.216/29🇬🇧GBassigned
81.23.59.24/29🇬🇧GBassigned
81.23.59.0/29🇬🇧GBassigned
81.23.50.128/29🇬🇧GBassigned
81.23.58.200/29🇬🇧GBassigned
81.23.50.120/29🇬🇧GBassigned
81.23.50.136/29🇬🇧GBassigned
81.23.50.88/29🇬🇧GBassigned
81.23.56.152/29🇬🇧GBassigned
81.23.56.128/29🇬🇧GBassigned
Origin ASN
AS41230
ASK4 ASK4 Limited
Geolocation
Country🇬🇧United KingdomGB
RegionEngland
CitySheffield
Coordinates53.3798, -1.4803 ↗
Abuse Contact
API
Open
GEThttps://api.ipctl.io/v1/prefix/81.23.48.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/81.23.48.0/20" | jq
External Links
RIPEstat Hurricane Electric BGP