37.228.104.0/21
🇺🇸CIDR
37.228.104.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
Washington D.C.
RIR
RIPENCC
Status
allocated
Allocated
7/9/2012
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 37.228.104.0/21 | AS39832NO-OPERA Opera Norway AS | Valid | RIPE | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 37.228.104.0/21 | AS39832 | /24 | ripe |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS39832 | RIPE | OPERA-MNT | 7/9/2012 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 37.228.104.0/22 | 🇺🇸US | assigned | |
| 37.228.110.0/24 | 🇺🇸US | assigned | |
| 37.228.108.128/25 | 🇺🇸US | assigned | |
| 37.228.109.0/25 | 🇺🇸US | assigned | |
| 37.228.111.0/25 | 🇺🇸US | assigned | |
| 37.228.109.128/25 | 🇺🇸US | assigned | |
| 37.228.108.0/25 | 🇺🇸US | assigned | |
| 37.228.111.128/26 | 🇺🇸US | assigned |
Origin ASN
AS39832
NO-OPERA Opera Norway AS
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/37.228.104.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/37.228.104.0/21" | jq
External Links