81.31.0.0/19 - GTT BACKBONE GTT Communications (AS3257)
CIDR
81.31.0.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇺🇸 United States
City
Washington D.C.
RIR
RIPE
Status
assigned
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.31.0.0/19 | AS3257 GTT-BACKBONE GTT Communications Inc. | No ROA | RIPE | 2026-10-12 |
More-Specific Announcements
1 more-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.31.28.0/24 | AS397025 Alstom Alstom Transport SA | No ROA | - | 2026-10-12 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS3257 | RIPE | AS3257-ROUTE-MNT | 2022-09-02 |
More Specific Prefixes
Transfer History
Registry transfers of 81.31.0.0/19, blocks inside it, or blocks containing it.
- 81.31.16.0/20Transfer ·
- 81.31.0.0/20Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 81.31.16.0/20 | Interoute Communications Limited | GTT Communications Inc. | Transfer | |
| 81.31.0.0/20 | Interoute Communications Limited | GTT Communications Inc. | Transfer |
Related Prefixes
Geolocation
Abuse Contact
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/81.31.0.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/81.31.0.0/19" | jq
External Links