104.16.240.0/20

AS13335 · Cloudflare, Inc.

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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:      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:        noc@cloudflare.com
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:        noc@cloudflare.com
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:        abuse@cloudflare.com
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:        rir@cloudflare.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 104.16.0.0/16

No nearby ranges found.

Hosted domains

There are 35,489 domain names hosted across 654 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
104.16.243.55	searchenginewatch.com	11083
104.16.250.22	wangfei.tv	9155
104.16.251.50	district5190.org	3790
104.16.252.50	clubrunner.ca	2737
104.16.251.80	starchapter.com	2138
104.16.249.80	starchapter.com	2135
104.16.252.80	starchapter.com	2135
104.16.250.80	starchapter.com	2133
104.16.253.80	starchapter.com	2132
104.16.240.20	pylusd.org	1788
104.16.243.78	scalestate.io	1002
104.16.244.78	kidiboard.com	943
104.16.254.177	zhenfanjixie.com	743
104.16.253.120	pypa.io	394
104.16.254.120	pycqa.org	383
104.16.255.167	unicity.com	259
104.16.240.137	sportngin.com	219
104.16.254.50	rocketsoftware.com	206
104.16.241.242	americanvintage-store.com	183
104.16.240.166	purewickathome.com	147

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
104.16.241.215	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.16.253.229	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.246.62	AS13335 Cloudflare, Inc.	`0.11ms` from Porto Alegre, BR
104.16.249.101	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.16.251.132	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.247.137	AS13335 Cloudflare, Inc.	`0.11ms` from Porto Alegre, BR
104.16.254.216	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.240.171	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.252.179	AS13335 Cloudflare, Inc.	`0.12ms` from Auckland, NZ
104.16.244.61	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.245.183	AS13335 Cloudflare, Inc.	`0.11ms` from Porto Alegre, BR
104.16.248.63	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.242.223	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.255.89	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
104.16.250.72	AS13335 Cloudflare, Inc.	`0.12ms` from Porto Alegre, BR
104.16.243.70	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE

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
201.20.75.164	AS28598 GIGA MAIS FIBRA TELECOMUNICACOES S.A. (DB3)	`1.24ms` from Fortaleza, BR
91.125.124.100	AS6871 Plusnet	`4.26ms` from London, GB
45.82.85.68	AS36352 HostPapa	`0.30ms` from Los Angeles, US
41.139.176.84	AS37061 Safaricom Limited	`7.01ms` from Nairobi, KE
179.109.60.52	AS262903 Tubaron Telecom	`1.38ms` from Novo Hamburgo, BR
5.129.40.36	AS31200 Novotelecom Ltd	`1.68ms` from Novosibirsk, RU
51.159.204.36	AS12876 SCALEWAY S.A.S.	`0.62ms` from Paris, FR
20.69.133.148	AS8075 Microsoft Corporation	`0.32ms` from Quincy, US
54.145.227.4	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
89.192.138.36	AS8011 MongoDB, Inc.	`0.13ms` from Reston, US
91.246.164.4	AS51570 JSC "ER-Telecom Holding"	`1.33ms` from Saint Petersburg, RU
47.237.231.180	AS45102 Alibaba (US) Technology Co., Ltd.	`0.69ms` from Singapore, SG
216.174.111.164	AS7057 Managed Network Systems Inc.	`6.25ms` from Toronto, CA
92.70.191.212	AS1136 KPN B.V.	`1.50ms` from Amsterdam, NL
80.26.231.148	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.86ms` from Madrid, ES
88.54.181.212	AS3269 Telecom Italia S.p.A.	`0.84ms` from Milan, IT
97.106.131.196	AS33363 Charter Communications, Inc	`8.27ms` from Orlando, US
124.145.11.180	AS9824 JCOM Co., Ltd.	`8.93ms` from Osaka, JP
101.166.10.148	AS1221 Telstra Limited	`11.16ms` from Sydney, AU
4.237.193.196	AS8075 Microsoft Corporation	`0.71ms` from Sydney, AU
95.86.73.196	AS42925 Internet Rimon LTD	`0.31ms` from Tel Aviv, IL
42.227.42.4	AS4837 CHINA UNICOM China169 Backbone	`5.54ms` from Zhengzhou, CN
169.130.161.100	AS7029 Windstream Communications LLC	`7.82ms` from Atlanta, US
20.110.106.84	AS8075 Microsoft Corporation	`0.43ms` from Boydton, US
1.156.154.244	AS1221 Telstra Limited	`10.57ms` from Brisbane, AU

Traceroute

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

traceroute -a -n -q1 -f4 104.16.252.170

traceroute to 104.16.252.170 (104.16.252.170): 64 hops max, 52 byte packets

4 [AS13335] 172.69.220.2 0.815 ms

5 [AS13335] 104.16.252.170 0.257 ms

Measurement taken from

IPinfo ProbeNet in Luxembourg, LU

On October 30th 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.

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