205.251.128.0/19 - BGP Prefix
IPv4not announcedNo ROA
CIDR
205.251.128.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇺🇸 United States
City
Spring
Status
not announced
Allocated
-
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
5 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 205.251.136.0/21 | AS11042 NTHL - NETWORK TRANSIT HOLDINGS LLC | No ROA | - | 2026-10-12 |
| 205.251.144.0/23 | AS11042 NTHL - NETWORK TRANSIT HOLDINGS LLC | No ROA | - | 2026-10-12 |
| 205.251.148.0/22 | AS11042 NTHL - NETWORK TRANSIT HOLDINGS LLC | No ROA | - | 2026-10-12 |
| 205.251.152.0/22 | AS11042 NTHL - NETWORK TRANSIT HOLDINGS LLC | No ROA | - | 2026-10-12 |
| 205.251.156.0/22 | AS11042 NTHL - NETWORK TRANSIT HOLDINGS LLC | No ROA | - | 2026-10-12 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 205.251.128.0/20 | 🇺🇸US | allocated | |
| 205.251.144.0/23 | AS11042 | 🇺🇸US | allocated |
| 205.251.146.0/23 | AS63421 | 🇺🇸US | allocated |
| 205.251.148.0/22 | AS11042 | 🇺🇸US | allocated |
| 205.251.152.0/21 | 🇺🇸US | allocated |
Transfer History
Registry transfers of 205.251.128.0/19, blocks inside it, or blocks containing it.
- 205.251.146.0/23Transfer ·
- 205.251.128.0/19M&A ·
Geolocation
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 transfer marketTransfers published by all five RIRs
API
Open https://api.ipctl.io/v1/prefix/205.251.128.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/205.251.128.0/19" | jq
External Links