37.123.248.0/21
🇬🇧CIDR
37.123.248.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇬🇧 United Kingdom
City
Bishop's Stortford
RIR
RIPENCC
Status
allocated
Allocated
2/16/2012
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 37.123.248.0/21 | AS198623ISUMO-UK ISUMO Ltd | Valid | RIPE | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 37.123.248.0/21 | AS198623 | /21 | ripe |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS198623 | RIPE | ISUMO-MNT | 8/7/2021 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 37.123.252.0/24 | 🇬🇧GB | assigned | |
| 37.123.253.0/24 | 🇩🇪DE | assigned | |
| 37.123.254.0/24 | 🇬🇧GB | assigned |
Origin ASN
AS198623
ISUMO-UK ISUMO Ltd
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/37.123.248.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/37.123.248.0/21" | jq
External Links