Home Prefix Lookup2001:400:f000::/40

2001:400:f000::/40 - ESnet (AS293)

IPv6ARINannouncedAS293ESNET - ESnet RPKI Invalid

CIDR

2001:400:f000::/40

IP Version

IPv6

Addresses

309.4Y

Mask

/40

Country

🇺🇸 United States

City

Berkeley

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
2001:400:f000::/40	AS293 ESNET - ESnet	Invalid	-	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
2001:400::/32	AS293 ESNET - ESnet	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
2001:400::/32	AS293	/32	arin

Origin ASN

AS293

ESNET - ESnet

Related Prefixes

Covering prefix

2001:400::/32AS293

More prefixes of AS293

All prefixes of AS293 →

Geolocation

Country🇺🇸United StatesUS

RegionCalifornia

CityBerkeley

Coordinates37.8759, -122.2500 ↗

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/2001:400:f000::/40

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

curl -s "https://api.ipctl.io/v1/prefix/2001:400:f000::/40" | jq

External Links

RIPEstat