204.128.16.0/20
🇺🇸CIDR
204.128.16.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Redmond
RIR
ARIN
Status
allocated
Allocated
8/22/1994
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.128.16.0/20 | AS3356LEVEL3 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.128.28.0/23 | AS3356LEVEL3 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
| 204.128.30.0/23 | AS3356LEVEL3 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
| 204.128.27.0/24 | AS209CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC | No ROA | — | 6/1/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS54703 | RADB | MAINT-AS7922 | 11/13/2023 |
Origin ASN
AS3356
LEVEL3 - Level 3 Parent, LLC
Geolocation
API
Open https://api.ipctl.io/v1/prefix/204.128.16.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.128.16.0/20" | jq
External Links