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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:cb00:67::/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

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

IP Address	ASN	Details
2400:cb00:67:1024::a29e:f54f	AS13335 Cloudflare, Inc.	`0.25ms` from Berlin, DE

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
20.88.158.224	AS8075 Microsoft Corporation	`0.38ms` from Ashburn, US
209.164.62.240	AS20021 Ntirety, Inc.	`8.81ms` from Chicago, US
194.103.125.48	AS3301 Telia Company AB	`0.93ms` from Goeteborg, SE
178.251.149.32	AS51319 KajoNet Oy	`2.35ms` from Helsinki, FI
210.176.165.224	AS4515 PCCW IMS Ltd (PCCW Business Internet Access)	`1.39ms` from Hong Kong, HK
112.26.0.32	AS9808 China Mobile Communications Group Co., Ltd.	`4.59ms` from Huainan, CN
99.7.191.128	AS7018 AT&T Enterprises, LLC	`3.36ms` from Kansas City, US
51.194.39.176	AS215294 Lumina broadband UAB	`0.19ms` from Kuala Lumpur, MY
184.185.157.64	AS22773 Cox Communications Inc.	`3.60ms` from Los Angeles, US
184.0.173.128	AS209 CenturyLink Communications, LLC	`3.18ms` from Miami, US
112.83.134.176	AS4837 CHINA UNICOM China169 Backbone	`4.32ms` from Nanjing, CN
191.5.24.80	AS263077 RazaoInfo Internet Ltda	`6.63ms` from Porto Alegre, BR
189.145.21.240	AS8151 UNINET	`11.18ms` from Santiago de Queretaro, MX
177.83.138.112	AS28573 Claro NXT Telecomunicacoes Ltda	`8.60ms` from Sao Paulo, BR
213.191.186.160	AS13124 A1 Bulgaria EAD	`5.52ms` from Sofia, BG
38.191.41.80	AS273221 FIBRAZO S.A.S.	`10.42ms` from Willemstad, CW
52.37.125.96	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
186.195.119.0	AS262355 VSX Networks	`0.67ms` from Curitiba, BR
103.49.108.0	AS59037 Zhejiang Ruili Information Technology Co., Ltd	`4.83ms` from Hangzhou, CN
210.121.144.80	AS4766 Korea Telecom	`1.23ms` from Incheon, KR
1.178.232.144	AS12479 Orange Espagne SA	`11.18ms` from Madrid, ES
3.7.241.64	AS16509 Amazon.com, Inc.	`0.15ms` from Mumbai, IN
68.183.110.224	AS14061 DigitalOcean, LLC	`0.34ms` from New York City, US
138.89.170.128	AS701 Verizon Business	`2.09ms` from New York City, US
34.235.179.32	AS14618 Amazon.com, Inc.	`0.22ms` from Reston, US

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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