156.154.204.0/22 - BGP Prefix
IPv4ARINallocated
CIDR
156.154.204.0/22
IP Version
IPv4
Addresses
1K
Mask
/22 (255.255.252.0)
Country
🇺🇸 United States
City
Westford
RIR
ARIN
Status
allocated
Allocated
2003-12-18
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS19905 | Other IRR | MAINT-AS7786 | 2025-09-25 |
Transfer History
Registry transfers of 156.154.204.0/22, blocks inside it, or blocks containing it.
- 156.154.207.0/24M&A ·
- 156.154.206.0/24M&A ·
- 156.154.205.0/24M&A ·
- 156.154.204.0/24M&A ·
- 156.154.204.0/22M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 156.154.207.0/24 | M&A | |||
| 156.154.206.0/24 | M&A | |||
| 156.154.205.0/24 | M&A | |||
| 156.154.204.0/24 | M&A | |||
| 156.154.204.0/22 | M&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/156.154.204.0/22Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/156.154.204.0/22" | jq
External Links