Home Prefix Lookup2600:380:6000::/38

2600:380:6000::/38 - AT&T Enterprises (AS20057)

IPv6ARINannouncedAS20057ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLCNo ROA

CIDR

2600:380:6000::/38

IP Version

IPv6

Addresses

1237.9Y

Mask

/38

Country

🇺🇸 United States

City

Houston

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
2600:380:6000::/38	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11

Related Announcements

1 less-specific, 8 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
2600:300::/24	AS7018 ATT-INTERNET4 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6000::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6080::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6100::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6180::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6200::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6280::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6300::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11
2600:380:6380::/41	AS20057 ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC	No ROA	-	2026-10-11

Transfer History

Registry transfers of 2600:380:6000::/38, blocks inside it, or blocks containing it.

2600:300::/24M&A · 2025-03-18
AT&T Mobility LLC
🇺🇸 US ARIN
→
AT&T Enterprises, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-03-18	2600:300::/24	AT&T Mobility LLC 🇺🇸 US ARIN	AT&T Enterprises, LLC 🇺🇸 US ARIN	M&A

Origin ASN

AS20057

ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC

Related Prefixes

Covering prefix

2600:300::/24AS7018

More prefixes of AS20057

All prefixes of AS20057 →

Geolocation

Country🇺🇸United StatesUS

RegionTexas

CityHouston

Coordinates29.7604, -95.3698 ↗

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

GEThttps://api.ipctl.io/v1/prefix/2600:380:6000::/38

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/2600:380:6000::/38" | jq

External Links

RIPEstat