208.51.0.0/16
🇺🇸CIDR
208.51.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
New York
RIR
ARIN
Status
allocated
Allocated
7/29/1999
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 208.51.0.0/16 | AS3549LVLT-3549 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
Covering Prefix
8 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 208.51.60.0/22 | AS17139COLORADOCOLO - Corporate Colocation Inc. | No ROA | — | 6/1/2026 |
| 208.51.62.0/23 | AS17139COLORADOCOLO - Corporate Colocation Inc. | No ROA | — | 6/1/2026 |
| 208.51.84.0/24 | AS3356LEVEL3 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
| 208.51.136.0/24 | AS3356LEVEL3 - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
| 208.51.59.0/24 | AS7385ABUL-14-7385 - Allstream Business US, LLC | No ROA | — | 6/1/2026 |
| 208.51.96.0/24 | AS10753LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE - Level 3 Parent, LLC | No ROA | — | 6/1/2026 |
| 208.51.37.0/24 | AS14252SCHOOLSPECIALTY - School Specialty, Inc. | No ROA | — | 6/1/2026 |
| 208.51.154.0/24 | AS21808PRLSS - Peerless Network Inc | No ROA | — | 6/1/2026 |
Origin ASN
AS3549
LVLT-3549 - Level 3 Parent, LLC
Geolocation
API
Open https://api.ipctl.io/v1/prefix/208.51.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/208.51.0.0/16" | jq
External Links