ResearchRouting table, RPKI, IRR & looking glass

AS12761 COLT Technology Services Group Limited

AS12761 (COLT-CORP-IT) is registered to COLT Technology Services Group Limited in GB. It originates 6 prefixes in the global routing table.

6
IPv4 prefixes
0
IPv6 prefixes
1,536
IPv4 addresses
100%
RPKI valid

Who holds AS12761

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS12761
Handle
COLT-CORP-IT
Organization
COLT Technology Services Group Limited
Country
GB
ASPA
None published

What AS12761 announces

Prefixes originated by AS12761 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
6
IPv6 prefixes
0
IPv4 addresses
1,536 (6 /24s)
RPKI valid
6 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS12761
6
With an IRR route object
6 100%

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

Who AS12761 is reached through

The AS just before AS12761 in the paths our looking glass collectors hold, for 6 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RIPECOLT-CORP-ITRIPE-NCC-END-MNT, COLT-UK

Route objects with origin AS12761: RIPE 7

as-sets that list AS12761 (13)