204.154.128.0/21 - BGP Prefix
IPv4ARINallocatedNo ROA
CIDR
204.154.128.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇵🇹 Portugal
City
Lisbon
RIR
ARIN
Status
allocated
Allocated
1994-10-25
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
4 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.154.128.0/23 | AS3952 TELLABS-ASN - Nokia of America Corporation | No ROA | - | 2026-10-16 |
| 204.154.130.0/23 | AS40548 INFINERA-US - Nokia of America Corporation | No ROA | - | 2026-10-16 |
| 204.154.132.0/23 | AS40548 INFINERA-US - Nokia of America Corporation | No ROA | - | 2026-10-16 |
| 204.154.134.0/23 | AS40548 INFINERA-US - Nokia of America Corporation | No ROA | - | 2026-10-16 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3952 | ARIN | MNT-NAC-178 | 2026-01-05 |
Transfer History
Registry transfers of 204.154.128.0/21, blocks inside it, or blocks containing it.
- 204.154.128.0/21M&A ·
- 204.154.128.0/21M&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/204.154.128.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.154.128.0/21" | jq
External Links