Home Prefix Lookup2a00:16c8:100::/40

2a00:16c8:100::/40 - BGP Prefix

IPv6RIPEassignedNo ROA

CIDR

2a00:16c8:100::/40

IP Version

IPv6

Addresses

309.4Y

Mask

/40

Country

🇬🇧 United Kingdom

City

Hoddesdon

RIR

RIPE

Status

assigned

Allocated

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

Related Announcements

1 less-specific, 4 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
2a00:16c8::/32	AS3257 GTT-BACKBONE GTT Communications Inc.	No ROA	-	2026-10-26
2a00:16c8:10b::/48	AS3257 GTT-BACKBONE GTT Communications Inc.	No ROA	-	2026-10-26
2a00:16c8:10c::/48	AS3257 GTT-BACKBONE GTT Communications Inc.	No ROA	-	2026-10-26
2a00:16c8:110::/48	AS50173 VTESSE GTT - EMEA Ltd.	No ROA	-	2026-10-26
2a00:16c8:111::/48	AS50173 VTESSE GTT - EMEA Ltd.	No ROA	-	2026-10-26

More Specific Prefixes

Prefix	AS	Country	Status
2a00:16c8:100::/48		🇬🇧GB	assigned
2a00:16c8:101::/48		🇬🇧GB	assigned
2a00:16c8:102::/48		🇬🇧GB	assigned
2a00:16c8:103::/48		🇬🇧GB	assigned
2a00:16c8:104::/48		🇬🇧GB	assigned
2a00:16c8:105::/48		🇬🇧GB	assigned
2a00:16c8:107::/48		🇬🇧GB	assigned
2a00:16c8:108::/48		🇬🇧GB	assigned
2a00:16c8:109::/48		🇬🇧GB	assigned
2a00:16c8:10a::/48		🇬🇧GB	assigned
2a00:16c8:10b::/48	AS3257	🇬🇧GB	assigned
2a00:16c8:10c::/48	AS3257	🇬🇧GB	assigned
2a00:16c8:10d::/48		🇬🇧GB	assigned
2a00:16c8:10e::/48		🇬🇧GB	assigned
2a00:16c8:10f::/48		🇬🇧GB	assigned
2a00:16c8:110::/48	AS50173	🇬🇧GB	assigned
2a00:16c8:111::/48	AS50173	🇬🇧GB	assigned
2a00:16c8:112::/48		🇬🇧GB	assigned
2a00:16c8:113::/48		🇬🇧GB	assigned
2a00:16c8:115::/48		🇬🇧GB	assigned

Transfer History

Registry transfers of 2a00:16c8:100::/40, blocks inside it, or blocks containing it.

2a00:16c8::/32Transfer · 2021-04-28
INTEROUTE NETWORKS LIMITED
RIPE NCC
→
GTT Communications Inc.
RIPE NCC
2a00:16c8::/32M&A · 2021-03-23
Interoute Vtesse Limited
RIPE NCC
→
INTEROUTE NETWORKS LIMITED
RIPE NCC

Date	Resource	From	To	Type
2021-04-28	2a00:16c8::/32	INTEROUTE NETWORKS LIMITED RIPE NCC	GTT Communications Inc. RIPE NCC	Transfer
2021-03-23	2a00:16c8::/32	Interoute Vtesse Limited RIPE NCC	INTEROUTE NETWORKS LIMITED RIPE NCC	M&A

Related Prefixes

Covering prefix

2a00:16c8::/32AS3257

Geolocation

Country🇬🇧United KingdomGB

RegionEngland

CityHoddesdon

Coordinates51.7584, -0.0024 ↗

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

GEThttps://api.ipctl.io/v1/prefix/2a00:16c8:100::/40

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

curl -s "https://api.ipctl.io/v1/prefix/2a00:16c8:100::/40" | jq

External Links

RIPEstat