2600:380:c00::/38 - AT&T Enterprises (AS20057)
CIDR
2600:380:c00::/38
IP Version
IPv6
Addresses
1237.9Y
Mask
/38
Country
🇺🇸 United States
City
Washington D.C.
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 2600:380:c00::/38 | AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC | No ROA | - | 2026-10-11 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 2600:300::/24 | AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC | No ROA | - | 2026-10-11 |
| 2600:380:800::/37 | AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC | No ROA | - | 2026-10-11 |
Transfer History
Registry transfers of 2600:380:c00::/38, blocks inside it, or blocks containing it.
- 2600:300::/24M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 2600:300::/24 | M&A |
Related Prefixes
More prefixes of AS20057
All prefixes of AS20057 →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/2600:380:c00::/38Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/2600:380:c00::/38" | jq
External Links