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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:cb00:80::/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

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

IP Address	ASN	Details
2400:cb00:80:1024::a29e:f129	AS13335 Cloudflare, Inc.	`0.16ms` from Taipei, TW

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
48.213.4.0	AS8075 Microsoft Corporation	`0.52ms` from Ashburn, US
45.8.68.144	AS206092 F.N.S. HOLDINGS LIMITED	`0.25ms` from Berlin, DE
87.64.212.192	AS5432 Proximus NV	`2.08ms` from Brussels, BE
104.250.125.96	AS36352 HostPapa	`0.33ms` from Dallas, US
20.13.235.112	AS8075 Microsoft Corporation	`0.19ms` from Dublin, IE
138.1.98.128	AS31898 Oracle Corporation	`0.32ms` from Frankfurt am Main, DE
92.73.189.176	AS3209 Vodafone GmbH	`8.11ms` from Hamburg, DE
73.251.118.48	AS7922 Comcast Cable Communications, LLC	`9.45ms` from Herndon, US
69.172.64.80	AS132585 SkyExchange Internet Access	`1.65ms` from Hong Kong, HK
72.56.183.144	AS213541 WS Telecom Inc	`0.55ms` from Miami, US
79.10.4.112	AS3269 Telecom Italia S.p.A.	`6.01ms` from Milan, IT
45.178.25.32	AS269016 F T L Net Provedor de Internet Ltda- ME	`6.92ms` from Osasco, BR
155.103.187.0	AS402117 White Tie Productions LLC	`1.06ms` from Phoenix, US
189.103.48.240	AS28573 Claro NXT Telecomunicacoes Ltda	`9.34ms` from Porto Alegre, BR
103.157.16.64	AS141253 Hyosec Solutions Private Limited	`0.18ms` from Aizawl, IN
57.144.70.144	AS32934 Facebook, Inc.	`0.53ms` from Ashburn, US
94.70.2.224	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`12.46ms` from Athens, GR
96.6.41.112	AS45758 Triple T Broadband Public Company Limited	`1.54ms` from Bangkok, TH
84.197.233.176	AS6848 Telenet BV	`6.34ms` from Brussels, BE
209.95.244.32	AS10676 IBM	`5.16ms` from Cincinnati, US
75.49.16.0	AS7018 AT&T Enterprises, LLC	`9.15ms` from Columbus, US
153.19.223.240	AS5550 Technical University of Gdansk, Academic Computer Center TASK	`0.55ms` from Gdansk, PL
113.109.30.48	AS4134 CHINANET BACKBONE	`2.47ms` from Guangzhou, CN
124.80.191.0	AS17849 SK Broadband Co Ltd	`2.13ms` from Incheon, KR
95.65.200.0	AS8386 Vodafone Net Iletisim Hizmetler AS	`9.06ms` from Istanbul, TR

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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