104.21.224.0/20

AS13335 · Cloudflare, Inc.

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United States
Domain	cloudflare.com
ASN	AS13335
Registry	ARIN
ID	CLOUDFLARENET

WHOIS Details

NetHandle:      NET-104-16-0-0-1
OrgID:          CLOUD14
Parent:         NET-104-0-0-0-0
NetName:        CLOUDFLARENET
NetRange:       104.16.0.0 - 104.31.255.255
NetType:        allocation
Comment:        All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Comment:        Geofeed: https://api.cloudflare.com/local-ip-ranges.csv
RegDate:        2014-03-28
Updated:        2024-09-04
TechHandle:     ADMIN2521-ARIN
AbuseHandle:    ABUSE2916-ARIN
NOCHandle:      NOC11962-ARIN
Source:         ARIN


OrgID:          CLOUD14
OrgName:        Cloudflare, Inc.
CanAllocate:    
Street:         101 Townsend Street
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94107
RegDate:        2010-07-09
Updated:        2024-11-25
OrgAdminHandle: ADMIN2521-ARIN
OrgTechHandle:  ADMIN2521-ARIN
OrgAbuseHandle: ABUSE2916-ARIN
OrgNOCHandle:   CLOUD146-ARIN
OrgRoutingHandle:   CLOUD146-ARIN
Source:         ARIN


POCHandle:      NOC11962-ARIN
IsRole:         Y
LastName:       NOC
FirstName:      
Street:         101 Townsend Street
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94107
RegDate:        2011-04-19
Updated:        2025-03-12
OfficePhone:    +1-650-319-8930
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      ADMIN2521-ARIN
IsRole:         Y
LastName:       Admin
FirstName:      
Street:         101 Townsend Street
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94107
RegDate:        2011-04-19
Updated:        2025-06-12
OfficePhone:    +1-650-319-8930
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      CLOUD146-ARIN
IsRole:         Y
LastName:       Cloudflare-NOC
FirstName:      
Street:         101 Townsend St
City:           San Francsico
State/Prov:     CA
Country:        US
PostalCode:     94107
RegDate:        2021-07-01
Updated:        2025-08-20
OfficePhone:    +1-650-319-8930
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      ABUSE2916-ARIN
IsRole:         Y
LastName:       Abuse
FirstName:      
Street:         101 Townsend Street
City:           San Francisco
State/Prov:     CA
Country:        US
PostalCode:     94107
RegDate:        2011-02-14
Updated:        2024-09-04
OfficePhone:    +1-650-319-8930
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 104.21.0.0/16

No nearby ranges found.

Hosted domains

There are 17,307 domain names hosted across 798 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
104.21.227.134	wangfei.tv	12096
104.21.224.5	wangfei.tv	12091
104.21.235.177	suspendeddomain.org	293
104.21.235.178	futuradigital.ml	293
104.21.234.143	sam17.eu	135
104.21.234.142	bosebtv.xyz	132
104.21.234.26	ss1325.xyz	87
104.21.234.27	ss1236.xyz	84
104.21.234.83	8mei293.xyz	46
104.21.234.82	8mei767.xyz	32
104.21.235.210	porntops1.live	29
104.21.234.238	vercdnlive2.tk	27
104.21.234.134	questionablecontent.net	27
104.21.235.145	escortmatch.nl	25
104.21.234.33	pornxzonexxxs1.online	24
104.21.234.239	setteidreams.net	22
104.21.234.135	questionablecontent.net	22
104.21.235.30	mxstatus.in	22
104.21.238.150	huaihuaimu.net	21
104.21.234.97	lightnovelworld.com	20

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

4,096 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
104.21.234.191	AS13335 Cloudflare, Inc.	`0.11ms` from Lisbon, PT
104.21.233.62	AS13335 Cloudflare, Inc.	`0.13ms` from Lisbon, PT
104.21.224.101	AS13335 Cloudflare, Inc.	`0.13ms` from Yerevan, AM
104.21.236.219	AS13335 Cloudflare, Inc.	`0.12ms` from Yerevan, AM
104.21.231.126	AS13335 Cloudflare, Inc.	`0.13ms` from Yerevan, AM
104.21.227.205	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.230.35	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.226.12	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.238.49	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.237.202	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.225.186	AS13335 Cloudflare, Inc.	`0.13ms` from Lisbon, PT
104.21.235.134	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.232.249	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.229.61	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.239.253	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
104.21.228.155	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT

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
203.114.188.4	AS17705 InSPire Net Ltd	`8.04ms` from Auckland, NZ
92.224.234.244	AS6805 Telefonica Germany GmbH & Co.OHG	`3.07ms` from Berlin, DE
1.26.245.212	AS4837 CHINA UNICOM China169 Backbone	`8.26ms` from Changchun, CN
38.248.105.68	AS18859 GVEC.net, LLC	`8.46ms` from Dallas, US
91.57.202.164	AS3320 Deutsche Telekom AG	`8.23ms` from Frankfurt am Main, DE
115.73.0.116	AS7552 Viettel Group	`1.12ms` from Ho Chi Minh City, VN
83.60.207.4	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.11ms` from Madrid, ES
104.129.76.20	AS46887 Crown Castle Fiber LLC	`0.68ms` from Secaucus, US
114.43.208.164	AS3462 Data Communication Business Group	`2.85ms` from Taipei, TW
171.118.105.20	AS4837 CHINA UNICOM China169 Backbone	`2.21ms` from Taiyuan, CN
49.243.176.196	AS10013 FreeBit Co.,Ltd.	`2.82ms` from Tokyo, JP
195.34.151.84	AS8412 T-Mobile Austria GmbH	`0.71ms` from Vienna, AT
123.15.169.212	AS4837 CHINA UNICOM China169 Backbone	`5.47ms` from Zhengzhou, CN
139.199.36.180	AS45090 Shenzhen Tencent Computer Systems Company Limited	`4.86ms` from Beijing, CN
174.182.3.180	AS7922 Comcast Cable Communications, LLC	`12.39ms` from Chicago, US
73.243.203.100	AS7922 Comcast Cable Communications, LLC	`1.73ms` from Denver, US
54.154.163.148	AS16509 Amazon.com, Inc.	`0.13ms` from Dublin, IE
52.59.86.212	AS16509 Amazon.com, Inc.	`0.15ms` from Frankfurt am Main, DE
130.61.71.132	AS31898 Oracle Corporation	`0.27ms` from Frankfurt am Main, DE
185.185.253.196	AS43409 SKP "Kyivteleservis"	`0.44ms` from Kyiv, UA
20.90.123.36	AS8075 Microsoft Corporation	`0.18ms` from London, GB
120.50.161.148	AS38628 HIMEJI CABLE TELEVISION CORPORATION	`3.48ms` from Osaka, JP
18.229.103.84	AS16509 Amazon.com, Inc.	`0.12ms` from Osasco, BR
82.127.192.148	AS3215 Orange S.A.	`2.99ms` from Paris, FR
52.143.145.84	AS8075 Microsoft Corporation	`0.36ms` from Paris, FR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f4 104.21.227.143

traceroute to 104.21.227.143 (104.21.227.143): 64 hops max, 52 byte packets

4 [AS13335] 172.69.220.2 0.749 ms

5 [AS13335] 104.21.227.143 0.157 ms

Measurement taken from

IPinfo ProbeNet in Luxembourg, LU

On December 6th 2025

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales