81.91.104.0/21
🇬🇧CIDR
81.91.104.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇬🇧 United Kingdom
City
Marlborough
RIR
RIPENCC
Status
allocated
Allocated
7/16/2002
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.91.104.0/21 | AS13101TNG-AS TNG Stadtnetz GmbH | Valid | RIPE | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 81.91.104.0/21 | AS13101 | /21 | ripe |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS13101 | RIPE | de-stadtwerke-6-mnt | 2/20/2024 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 81.91.104.0/24 | 🇩🇪DE | assigned | |
| 81.91.109.0/24 | 🇩🇪DE | assigned | |
| 81.91.110.0/24 | 🇩🇪DE | assigned | |
| 81.91.106.0/24 | 🇩🇪DE | assigned | |
| 81.91.111.0/24 | 🇩🇪DE | assigned | |
| 81.91.108.0/24 | 🇩🇪DE | assigned | |
| 81.91.105.0/24 | 🇩🇪DE | assigned | |
| 81.91.107.0/24 | 🇩🇪DE | assigned |
Origin ASN
AS13101
TNG-AS TNG Stadtnetz GmbH
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/81.91.104.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/81.91.104.0/21" | jq
External Links