Home Prefix Lookup2606:f100:d600::/39

2606:f100:d600::/39 - BT British Telecommunications Limited (AS5400)

IPv6ARINannouncedAS5400BT British Telecommunications Limited RPKI Valid

CIDR

2606:f100:d600::/39

IP Version

IPv6

Addresses

618.9Y

Mask

/39

Country

🇬🇧 United Kingdom

City

London

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
2606:f100:d600::/39	AS5400 BT British Telecommunications Limited	Valid	ARIN	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
2606:f100::/32	AS3300 BT British Telecommunications Limited	No ROA	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
2606:f100:d600::/39	AS5400	/39	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS5400	ARIN	MNT-BMS-105	2026-02-19

Origin ASN

AS5400

BT British Telecommunications Limited

Related Prefixes

Covering prefix

2606:f100::/32AS3300

More prefixes of AS5400

All prefixes of AS5400 →

Geolocation

Country🇬🇧United KingdomGB

RegionEngland

CityLondon

Coordinates51.5072, -0.1276 ↗

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 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/2606:f100:d600::/39

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

curl -s "https://api.ipctl.io/v1/prefix/2606:f100:d600::/39" | jq

External Links

RIPEstat