63.251.192.0/19 - BGP Prefix
IPv4ARINallocatedNo ROA
CIDR
63.251.192.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇺🇸 United States
City
Stamford (East Side of Stamford)
RIR
ARIN
Status
allocated
Allocated
1999-12-02
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below. | ||||
More-Specific Announcements
13 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 63.251.192.0/23 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.192.0/24 | AS13789 INTERNAP-BLK3 - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.194.0/23 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.196.0/24 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.197.0/24 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.200.0/24 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.201.0/24 | AS402455 VENTURE-DEVELOPMENT-LLC - Venture | Valid | - | 2026-10-11 |
| 63.251.202.0/24 | AS219391 UPPERCUT-AS Ub services FlexCo (Flexible Kapitalgesellschaft) | Valid | - | 2026-10-11 |
| 63.251.203.0/24 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.204.0/22 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.204.0/24 | AS12180 INTERNAP-2BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.208.0/20 | AS10912 INTERNAP-BLK - Unitas Global | No ROA | - | 2026-10-11 |
| 63.251.212.0/24 | AS15074 VIEWSONIC - Viewsonic Corporation | No ROA | - | 2026-10-11 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 63.251.192.0/21 | 🇺🇸US | allocated | |
| 63.251.200.0/24 | AS10912 | 🇺🇸US | allocated |
| 63.251.201.0/24 | AS402455 | 🇺🇸US | allocated |
| 63.251.202.0/23 | 🇺🇸US | allocated | |
| 63.251.202.0/24 | AS219391 | 🇦🇹AT | assigned |
| 63.251.203.0/24 | AS10912 | 🇺🇸US | allocated |
| 63.251.204.0/22 | AS10912 | 🇺🇸US | allocated |
| 63.251.208.0/20 | AS10912 | 🇺🇸US | allocated |
Transfer History
Registry transfers of 63.251.192.0/19, blocks inside it, or blocks containing it.
- 63.251.202.0/24inter-RIRTransfer ·
- 63.251.201.0/24Transfer ·
- 63.251.192.0/19M&A ·
- 63.251.192.0/19M&A ·
- 63.251.0.0/16M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 63.251.202.0/24inter-RIR | Transfer | |||
| 63.251.201.0/24 | Transfer | |||
| 63.251.192.0/19 | M&A | |||
| 63.251.192.0/19 | M&A | |||
| 63.251.0.0/16 | M&A |
Geolocation
Country🇺🇸United StatesUS
RegionConnecticut
CityStamford (East Side of Stamford)
Coordinates41.0605, -73.5097 ↗
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/63.251.192.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/63.251.192.0/19" | jq
External Links