104.255.136.0/21
🇺🇸IPv4RIPEassignedNo ROA
CIDR
104.255.136.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇺🇸 United States
City
San Francisco (Bayview)
RIR
RIPE
Status
assigned
Allocated
-
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 104.255.140.0/23 | AS15190CTS-LANGUAGELINK - CTS LanguageLink | No ROA | — | 5/30/2026 |
| 104.255.140.0/24 | AS15190CTS-LANGUAGELINK - CTS LanguageLink | No ROA | — | 5/30/2026 |
| 104.255.141.0/24 | AS15190CTS-LANGUAGELINK - CTS LanguageLink | No ROA | — | 5/30/2026 |
| 104.255.142.0/24 | AS395508PORTS-AMERICA - Ports America Shared Services, Inc. | Valid | — | 5/30/2026 |
| 104.255.143.0/24 | AS395508PORTS-AMERICA - Ports America Shared Services, Inc. | Valid | — | 5/30/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 104.255.136.0/22 | AS393913 | 🇺🇸US | allocated |
| 104.255.142.0/23 | AS395508 | 🇺🇸US | allocated |
| 104.255.140.0/23 | AS15190 | 🇺🇸US | allocated |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/104.255.136.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/104.255.136.0/21" | jq
External Links