104.20.0.0/20

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:        [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:      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:      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 104.20.0.0/16

No nearby ranges found.

Hosted domains

There are 34,757 domain names hosted across 980 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
104.20.10.239	netsons.net	11635
104.20.11.239	netsons.com	11564
104.20.4.197	stockfabrics.com	1708
104.20.10.197	noiselessnook.com	1695
104.20.7.133	t.ly	838
104.20.6.133	t.ly	806
104.20.4.36	mixcloud.com	547
104.20.13.253	101domain.com	284
104.20.15.156	empireflippers.com	269
104.20.2.124	uniformadvantage.com	176
104.20.5.36	mixcloud.com	157
104.20.1.168	romantichoteldallas.com	145
104.20.13.136	2m.ma	128
104.20.0.196	thyssenkrupp-steel.com	121
104.20.14.136	2m.ma	114
104.20.4.183	accountor.com	114
104.20.6.192	opensocietyfoundations.org	111
104.20.6.42	zoznam.sk	101
104.20.0.15	activecampaign.com	100
104.20.7.39	ossoffforsenate2020.org	98

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
104.20.5.198	AS13335 Cloudflare, Inc.	`0.11ms` from Lima, PE
104.20.11.109	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.9.212	AS13335 Cloudflare, Inc.	`0.13ms` from Lisbon, PT
104.20.1.238	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
104.20.14.84	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.12.115	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.15.89	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
104.20.13.122	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.4.158	AS13335 Cloudflare, Inc.	`0.11ms` from Lisbon, PT
104.20.3.25	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
104.20.0.230	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.6.222	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
104.20.7.136	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.10.74	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
104.20.8.41	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
104.20.2.37	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
120.133.35.36	AS23724 IDC, China Telecommunications Corporation	`3.29ms` from Beijing, CN
181.24.47.212	AS22927 Telefonica de Argentina	`12.81ms` from Buenos Aires, AR
187.147.109.116	AS8151 UNINET	`12.25ms` from Cancún, MX
75.185.218.36	AS10796 Charter Communications Inc	`9.54ms` from Columbus, US
91.39.229.20	AS3320 Deutsche Telekom AG	`2.82ms` from Frankfurt am Main, DE
121.199.64.20	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.64ms` from Hangzhou, CN
41.18.217.148	AS29975 Vodacom	`10.89ms` from Johannesburg, ZA
172.249.45.68	AS20001 Charter Communications Inc	`6.33ms` from Los Angeles, US
69.38.167.180	AS26878 Natural Wireless, LLC	`1.15ms` from New York City, US
192.51.169.132	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.31ms` from Osaka, JP
73.67.170.4	AS7922 Comcast Cable Communications, LLC	`3.42ms` from Portland, US
180.167.30.132	AS4812 China Telecom (Group)	`2.70ms` from Shanghai, CN
37.79.222.36	AS12389 PJSC Rostelecom	`0.49ms` from Yekaterinburg, RU
201.253.156.244	AS7303 Telecom Argentina S.A.	`17.42ms` from Asuncion, PY
179.95.14.36	AS18881 TELEFÔNICA BRASIL S.A	`6.82ms` from Brasilia, BR
64.93.252.20	AS32733 University of Dayton	`10.15ms` from Chicago, US
23.167.120.4	AS400393 Digital Example LLC	`7.66ms` from Chicago, US
75.148.41.180	AS7922 Comcast Cable Communications, LLC	`5.20ms` from Denver, US
151.80.34.4	AS16276 OVH SAS	`0.06ms` from Gravelines, FR
14.232.22.196	AS45899 VNPT Corp	`1.48ms` from Hanoi, VN
173.173.137.36	AS11427 Charter Communications Inc	`11.13ms` from Houston, US
104.35.105.100	AS20001 Charter Communications Inc	`5.43ms` from Los Angeles, US
93.21.93.52	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`9.56ms` from Lyon, FR
212.142.137.228	AS12338 Euskaltel S.A.	`7.62ms` from Madrid, ES
16.26.85.52	AS16509 Amazon.com, Inc.	`0.62ms` from Melbourne, AU

Traceroute

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

traceroute -a -n -q1 104.20.0.73

traceroute to 104.20.0.73 (104.20.0.73): 64 hops max, 52 byte packets

1 [AS7195] 200.25.47.17 0.294 ms

2 *

3 [AS13335] 104.20.0.73 0.207 ms

Measurement taken from

IPinfo ProbeNet in Lima, PE

On November 28th 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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