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Summary

Country	United States
Domain	cloudflare.com
ASN	AS13335
Registry	APNIC
ID	CLOUDFLARE_2400_CB00_0000_36

WHOIS Details

inet6num:       2400:cb00::/36
netname:        CLOUDFLARE_2400_CB00_0000_36
descr:          Cloudflare, Inc.
descr:          101 Townsend Street, San Francisco CA 94107
country:        US
admin-c:        CTC17-AP
tech-c:         CTC17-AP
abuse-c:        AC1914-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-CLOUDFLARE-AP
mnt-irt:        IRT-CLOUDFLARE-AP
last-modified:  2021-01-13T23:48:10Z
source:         APNIC

irt:            IRT-CLOUDFLARE-AP
address:        Cloudflare, Inc.
address:        101 Townsend Street, San Francisco CA 94107
e-mail:         rir@cloudflare.com
abuse-mailbox:  abuse@cloudflare.com
admin-c:        CTC15-AP
tech-c:         CTC15-AP
auth:           # Filtered
remarks:        rir@cloudflare.com was validated on 2026-03-25
remarks:        abuse@cloudflare.com was validated on 2026-04-10
irt-nfy:        rir@cloudflare.com
notify:         rir@cloudflare.com
mnt-by:         MAINT-CLOUDFLARE-AP
last-modified:  2026-04-10T14:53:05Z
source:         APNIC

role:           ABUSE CLOUDFLAREAP
country:        ZZ
address:        Cloudflare, Inc.
address:        101 Townsend Street, San Francisco CA 94107
phone:          +000000000
e-mail:         rir@cloudflare.com
admin-c:        CTC15-AP
tech-c:         CTC15-AP
nic-hdl:        AC1914-AP
remarks:        Generated from irt object IRT-CLOUDFLARE-AP
remarks:        rir@cloudflare.com was validated on 2026-03-25
remarks:        abuse@cloudflare.com was validated on 2026-04-10
abuse-mailbox:  abuse@cloudflare.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-10T14:53:29Z
source:         APNIC

role:           Cloudflare Technical Contact
address:        101 Townsend Street, San Francisco CA 94107
country:        US
phone:          +1-650-319-8930
e-mail:         rir@cloudflare.com
admin-c:        CTC17-AP
tech-c:         CTC17-AP
nic-hdl:        CTC17-AP
notify:         rir@cloudflare.com
mnt-by:         MAINT-CLOUDFLARE-AP
last-modified:  2017-09-07T21:57:11Z
source:         APNIC

route6:         2400:cb00::/36
origin:         AS13335
descr:          Cloudflare, Inc. 101 Townsend Street
mnt-by:         MAINT-CLOUDFLARE-AP
last-modified:  2020-06-10T00:00:34Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 2400:cb00:241::/48

No nearby ranges found.

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

3 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
2400:cb00:241:1024::ac45:124b	AS13335 Cloudflare, Inc.	`50.02ms` from São Paulo, BR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
20.121.255.128	AS8075 Microsoft Corporation	`0.91ms` from Ashburn, US
76.20.197.16	AS7922 Comcast Cable Communications, LLC	`5.11ms` from Atlanta, US
110.252.81.16	AS4837 CHINA UNICOM China169 Backbone	`7.05ms` from Beijing, CN
75.15.255.64	AS7018 AT&T Enterprises, LLC	`2.93ms` from Chicago, US
185.24.124.16	AS44558 Netonline Bilisim Sirketi LTD	`11.82ms` from Denizli, TR
176.198.247.208	AS3209 Vodafone GmbH	`10.10ms` from Frankfurt am Main, DE
164.132.216.112	AS16276 OVH SAS	`0.07ms` from Gravelines, FR
36.140.96.192	AS9808 China Mobile Communications Group Co., Ltd.	`0.51ms` from Hangzhou, CN
111.95.49.144	AS23700 Linknet-Fastnet ASN	`5.14ms` from Jakarta, ID
94.30.98.112	AS5413 Wavenet Limited	`3.43ms` from London, GB
84.33.81.16	AS35612 EOLO S.p.A.	`4.19ms` from Milan, IT
183.87.224.80	AS24554 Microscan Internet Limited	`2.73ms` from Mumbai, IN
90.58.191.160	AS3215 Orange S.A.	`6.70ms` from Paris, FR
93.91.57.128	AS44489 STARNET, s.r.o.	`2.83ms` from Prague, CZ
151.50.207.176	AS1267 WIND TRE S.P.A.	`11.09ms` from Rome, IT
71.212.170.96	AS209 CenturyLink Communications, LLC	`1.41ms` from Seattle, US
174.165.119.96	AS7922 Comcast Cable Communications, LLC	`5.79ms` from Seattle, US
119.211.167.32	AS4766 Korea Telecom	`1.79ms` from Seoul, KR
210.139.135.160	AS2527 Sony Network Communications Inc.	`8.73ms` from Tokyo, JP
177.38.164.0	AS262408 CEPAIN TELECOM	`1.38ms` from Cascavel, BR
119.4.229.112	AS4837 CHINA UNICOM China169 Backbone	`2.69ms` from Chengdu, CN
24.32.75.48	AS19108 Optimum	`17.53ms` from Dallas, US
14.211.40.224	AS4134 CHINANET BACKBONE	`3.88ms` from Guangzhou, CN
84.162.182.16	AS3320 Deutsche Telekom AG	`5.44ms` from Hamburg, DE
150.95.122.32	AS131392 GMO-Z.com Runsystem Joint Stock Company	`1.14ms` from Hanoi, VN

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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