83.137.144.0/21
🇳🇱CIDR
83.137.144.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇳🇱 The Netherlands
City
Groningen (Schilders- en Zeeheldenwijk)
RIR
RIPENCC
Status
allocated
Allocated
5/26/2004
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 83.137.144.0/21 | AS31477DUOCAST-AS Duocast B.V. | Valid | RIPE | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 83.137.146.0/24 | AS31477DUOCAST-AS Duocast B.V. | Valid | — | 6/1/2026 |
| 83.137.151.0/24 | AS31477DUOCAST-AS Duocast B.V. | Valid | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 83.137.144.0/21 | AS31477 | /24 | ripe |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS31477 | RIPE | MNT-DUOCAST | 6/26/2004 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 83.137.144.0/24 | 🇳🇱NL | assigned | |
| 83.137.145.0/24 | 🇳🇱NL | assigned | |
| 83.137.149.0/24 | 🇳🇱NL | assigned | |
| 83.137.150.0/24 | 🇳🇱NL | assigned | |
| 83.137.148.64/29 | 🇳🇱NL | assigned | |
| 83.137.148.168/29 | 🇳🇱NL | assigned | |
| 83.137.148.40/29 | 🇳🇱NL | assigned | |
| 83.137.148.4/30 | 🇳🇱NL | assigned |
Origin ASN
AS31477
DUOCAST-AS Duocast B.V.
Geolocation
Country🇳🇱The NetherlandsNL
RegionGroningen
CityGroningen (Schilders- en Zeeheldenwijk)
Coordinates53.2304, 6.5321 ↗
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/83.137.144.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/83.137.144.0/21" | jq
External Links