191.0.0.0/18 - (AS53387)
CIDR
191.0.0.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇺🇸 United States
City
Dover
RIR
ARIN
Status
allocated
Allocated
2026-07-24
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
1 more-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 191.0.0.0/24 | AS14618 AMAZON-AES - Amazon.com, Inc. | Valid | - | 2026-10-13 |
Transfer History
Registry transfers of 191.0.0.0/18, blocks inside it, or blocks containing it.
- 191.0.0.0/18Transfer ·
- 191.0.0.0/18inter-RIRTransfer ·
Origin ASN
AS53387
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/191.0.0.0/18Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/191.0.0.0/18" | jq
External Links