204.28.128.0/19 - BGP Prefix
IPv4ARINallocated RPKI Invalid
CIDR
204.28.128.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇺🇸 United States
City
Northbrook
RIR
ARIN
Status
allocated
Allocated
2026-10-07
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
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| 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
3 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.28.136.0/24 | AS3356 LEVEL3 - Level 3 Parent, LLC | Invalid | - | 2026-10-12 |
| 204.28.150.0/24 | AS7381 SRS-6-Z-7381 - BroadbandONE, LLC | Invalid | - | 2026-10-12 |
| 204.28.159.0/24 | AS27463 AS-GLOBALTELEHOST - GLOBALTELEHOST Corp. | Valid | - | 2026-10-12 |
Transfer History
Registry transfers of 204.28.128.0/19, blocks inside it, or blocks containing it.
- 204.28.128.0/19Transfer ·
- 204.28.128.0/18M&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 transfers in the ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/204.28.128.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.28.128.0/19" | jq
External Links