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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:cb00:148::/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

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

IP Address	ASN	Details
2400:cb00:148::1	AS13335 Cloudflare, Inc.	`0.26ms` from Vilnius, LT

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
40.84.109.192	AS8075 Microsoft Corporation	`0.22ms` from Boydton, US
122.164.13.176	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.50ms` from Chennai, IN
134.76.172.48	AS207592 Gesellschaft fuer wissenschaftliche Datenverarbeitung mbH, Goettingen	`4.58ms` from Frankfurt am Main, DE
113.118.51.48	AS4134 CHINANET BACKBONE	`2.49ms` from Guangzhou, CN
113.22.135.0	AS18403 FPT Telecom Company	`1.41ms` from Ho Chi Minh City, VN
114.108.83.0	AS23563 SK Broadband Co Ltd	`1.50ms` from Incheon, KR
36.69.156.64	AS7713 PT Telekomunikasi Indonesia	`1.69ms` from Jakarta, ID
178.165.15.32	AS34700 MAXNET TELECOM, LTD	`6.89ms` from Kyiv, UA
109.51.245.160	AS2860 NOS COMUNICACOES, S.A.	`9.05ms` from Lisbon, PT
72.197.45.96	AS22773 Cox Communications Inc.	`8.74ms` from Los Angeles, US
98.208.90.64	AS7922 Comcast Cable Communications, LLC	`11.00ms` from Los Angeles, US
158.179.198.0	AS31898 Oracle Corporation	`0.14ms` from Marseille, FR
209.127.41.48	AS55286 B2 Net Solutions Inc.	`0.42ms` from Montreal, CA
80.131.153.96	AS3320 Deutsche Telekom AG	`3.08ms` from Nuernberg, DE
180.144.61.80	AS17511 OPTAGE Inc.	`1.77ms` from Osaka, JP
178.65.107.80	AS12389 PJSC Rostelecom	`5.17ms` from Saint Petersburg, RU
14.88.131.32	AS4766 Korea Telecom	`1.66ms` from Seoul, KR
20.227.42.16	AS8075 Microsoft Corporation	`0.70ms` from Sydney, AU
20.121.185.224	AS8075 Microsoft Corporation	`0.37ms` from Ashburn, US
162.229.19.160	AS7018 AT&T Enterprises, LLC	`5.63ms` from Atlanta, US
43.209.17.96	AS16509 Amazon.com, Inc.	`1.56ms` from Bangkok, TH
148.70.24.128	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.76ms` from Chengdu, CN
65.31.4.80	AS10796 Charter Communications Inc	`8.80ms` from Cleveland, US
27.217.100.16	AS4837 CHINA UNICOM China169 Backbone	`8.00ms` from Qingdao, CN
18.233.242.32	AS14618 Amazon.com, Inc.	`0.40ms` 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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