AS203898 - CLOUDFLARENET-UK - Cloudflare Inc, US

United Kingdom
AS Number
AS203898
AS Name
CLOUDFLARENET-UK
Org Name
Cloudflare Inc
Country / Region
United States
Registry

ripe

RegDate

Updated

2026-03-05T15:29:31Z

AS203898 Looking Glass
IPv4Prefixes

1

IPv6Prefixes

2

IPv4 NUMs

256

IPv6 NUMs(/64)

131,072

CIDR Description IP Num
185.122.0.0/24
IRR Valid
Cloudflare Inc 256
CIDR Description IP NUMs(prefix /64)
2606:54c1:a::/48
IRR Valid
Cloudflare, Inc. 65536
2606:54c1:c::/48
IRR Valid
Cloudflare, Inc. 65536
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS8220 COLT - COLT Technology Services Group Limited, GB United Kingdom 1,497,088 25,770,590,208 IPv4 IPv4 IPv6 IPv6
AS2860 NOS_COMUNICACOES - NOS COMUNICACOES, S.A., PT Portugal 1,770,496 103,079,215,104 IPv6 IPv6
AS1273 CW - Vodafone Group PLC, GB United Kingdom 2,054,400 8,796,095,119,360 IPv4 IPv4 IPv6 IPv6

Whois Record

as-block AS203889 - AS203938

as-block
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
2026-03-05T15:29:31Z
last-modified
2026-03-05T15:29:31Z
source
RIPE

aut-num AS203898

aut-num
as-name
CLOUDFLARENET-UK
descr
Cloudflare, Inc.
101 Townsend Street, San Francisco, CA 94107, US
status
ASSIGNED
mnt-by
RIPE-NCC-END-MNT
MNT-CLOUDFLARE
notify
admin-c
CAC80-RIPE
tech-c
CTC6-RIPE
org
ORG-CI40-RIPE
remarks
https://cloudflare.com/abuse
created
2015-10-08T08:41:45Z
last-modified
2019-06-20T01:23:20Z
source
RIPE

organisation ORG-CI40-RIPE

organisation
ORG-CI40-RIPE
org-name
Cloudflare Inc
country
US
reg-nr
4710875 (Delaware)
org-type
LIR
remarks
https://cloudflare.com/abuse
address
101 Townsend Street
CA 94107
San Francisco
UNITED STATES
phone
+1-650-319-8939
fax-no
+1-650-230-7173
e-mail
admin-c
TP5485-RIPE
ML18637-RIPE
SR11544-RIPE
abuse-c
CF6885-RIPE
mnt-ref
RIPE-NCC-HM-MNT
MNT-CLOUDFLARE
notify
mnt-by
RIPE-NCC-HM-MNT
MNT-CLOUDFLARE
created
2011-05-25T10:01:50Z
last-modified
2026-05-13T07:33:38Z
source
RIPE

person Cloudflare Abuse Contact

person
Cloudflare Abuse Contact
address
Cloudflare Germany GmbH, c/o Design Offices Munchen Atlas, Rosenheimer Strasse 143C, 8th floor, 81671 Munchen, Germany
phone
+49 89 2555 2276
e-mail
notify
remarks
All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
nic-hdl
CAC80-RIPE
mnt-by
MNT-CLOUDFLARE
created
2012-06-01T23:27:49Z
last-modified
2026-01-21T11:33:14Z
source
RIPE

person Cloudflare Technical Contact

person
Cloudflare Technical Contact
address
Cloudflare Germany GmbH, c/o Design Offices Munchen Atlas, Rosenheimer Strasse 143C, 8th floor, 81671 Munchen, Germany
phone
+49 89 2555 2276
notify
nic-hdl
CTC6-RIPE
mnt-by
MNT-CLOUDFLARE
created
2012-06-01T23:35:57Z
last-modified
2026-01-21T17:26:19Z
source
RIPE
 

as-block:       AS203889 - AS203938
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:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE



aut-num:        AS203898
as-name:        CLOUDFLARENET-UK
descr:          Cloudflare, Inc.
descr:          101 Townsend Street, San Francisco, CA 94107, US
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-CLOUDFLARE
notify:         [email protected]
admin-c:        CAC80-RIPE
tech-c:         CTC6-RIPE
org:            ORG-CI40-RIPE
remarks:        https://cloudflare.com/abuse
created:        2015-10-08T08:41:45Z
last-modified:  2019-06-20T01:23:20Z
source:         RIPE

organisation:   ORG-CI40-RIPE
org-name:       Cloudflare Inc
country:        US
reg-nr:         4710875 (Delaware)
org-type:       LIR
remarks:        https://cloudflare.com/abuse
address:        101 Townsend Street
address:        CA 94107
address:        San Francisco
address:        UNITED STATES
phone:          +1-650-319-8939
fax-no:         +1-650-230-7173
e-mail:         [email protected]
admin-c:        TP5485-RIPE
admin-c:        ML18637-RIPE
admin-c:        SR11544-RIPE
abuse-c:        CF6885-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-CLOUDFLARE
notify:         [email protected]
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-CLOUDFLARE
created:        2011-05-25T10:01:50Z
last-modified:  2026-05-13T07:33:38Z
source:         RIPE

person:         Cloudflare Abuse Contact
address:        Cloudflare Germany GmbH, c/o Design Offices Munchen Atlas, Rosenheimer Strasse 143C, 8th floor, 81671 Munchen, Germany
phone:          +49 89 2555 2276
e-mail:         [email protected]
notify:         [email protected]
remarks:        All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
nic-hdl:        CAC80-RIPE
mnt-by:         MNT-CLOUDFLARE
created:        2012-06-01T23:27:49Z
last-modified:  2026-01-21T11:33:14Z
source:         RIPE

person:         Cloudflare Technical Contact
address:        Cloudflare Germany GmbH, c/o Design Offices Munchen Atlas, Rosenheimer Strasse 143C, 8th floor, 81671 Munchen, Germany
phone:          +49 89 2555 2276
notify:         [email protected]
nic-hdl:        CTC6-RIPE
mnt-by:         MNT-CLOUDFLARE
created:        2012-06-01T23:35:57Z
last-modified:  2026-01-21T17:26:19Z
source:         RIPE