ResearchRouting table, RPKI, IRR & looking glass

AS201303 CentralNic Ltd

AS201303 (CentralNic-Anycast-F) is registered to CentralNic Ltd in GB, through RIPE. It originates 2 prefixes in the global routing table.

1
IPv4 prefixes
1
IPv6 prefixes
256
IPv4 addresses
100%
RPKI valid

Who holds AS201303

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

AS number
AS201303
Handle
CentralNic-Anycast-F
Organization
CentralNic Ltd
Country
GB
Registry
RIPE
ASPA
None published
WHOIS recordRIPE
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS200537 - AS202347'

as-block:       AS200537 - AS202347
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2026-06-17T08:25:01Z
last-modified:  2026-06-17T08:25:01Z
source:         RIPE

% Information related to 'AS201303'

% Abuse contact for 'AS201303' is 'abuse@centralnic.com'

aut-num:        AS201303
as-name:        CentralNic-Anycast-F
org:            ORG-CL213-RIPE
remarks:        ---------------------------------------------------------
remarks:        CentralNic
remarks:        -
import:         from AS42044 accept ANY
export:         to AS42044 announce AS201303
remarks:        ---------------------------------------------------------
remarks:        CentralNic Anycast A
remarks:        -
import:         from AS199330 accept ANY
export:         to AS199330 announce AS201303
remarks:        ---------------------------------------------------------
remarks:        CentralNic Anycast B
remarks:        -
import:         from AS60890 accept ANY
export:         to AS60890 announce AS201303
remarks:        ---------------------------------------------------------
remarks:        CloudFlare
remarks:        -
import:         FROM AS13335 ACCEPT ANY
export:         TO AS13335 ANNOUNCE AS201303
remarks:        ---------------------------------------------------------
admin-c:        CNO4-RIPE
tech-c:         CNO4-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CENTRALNIC-MNT
created:        2014-11-28T15:05:09Z
last-modified:  2021-05-12T16:26:01Z
source:         RIPE # Filtered

organisation:   ORG-CL213-RIPE
org-name:       CentralNic Ltd
country:        GB
reg-nr:         04985780
org-type:       LIR
address:        4th Floor, Saddlers House, 44 Gutter Lane
address:        EC2V 6BR
address:        London
address:        UNITED KINGDOM
phone:          +442033880600
fax-no:         +442033880601
mnt-ref:        CENTRALNIC-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CENTRALNIC-MNT
abuse-c:        AT10393-RIPE
created:        2013-04-03T09:52:52Z
last-modified:  2026-05-13T07:34:49Z
source:         RIPE # Filtered

role:           CentralNic Network Operations
address:        CentralNic Ltd
address:        4th Floor, Saddlers House
address:        44 Gutter Lane
address:        London
address:        EC2V 6BR
address:        United Kingdom
org:            ORG-CL213-RIPE
admin-c:        DNS53
admin-c:        KA4521-RIPE
admin-c:        JH30387-RIPE
nic-hdl:        CNO4-RIPE
mnt-by:         CENTRALNIC-MNT
created:        2013-04-08T09:10:27Z
last-modified:  2026-06-18T08:20:35Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.124.1 (BUSA)


What AS201303 announces

Prefixes originated by AS201303 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
1
IPv6 prefixes
1
IPv4 addresses
256 (1 /24s)
RPKI valid
2 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS201303
2
With an IRR route object
2 100%

Announced prefixes

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

IPv4 (1)
IPv6 (1)

RPKI valid   RPKI invalid   no ROA covers it

Who AS201303 is reached through

The AS just before AS201303 in the paths our looking glass collectors hold, for 2 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.