172.66.160.0/20

AS13335 · Cloudflare, Inc.

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Summary

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

WHOIS Details

NetHandle:      NET-172-64-0-0-1
OrgID:          CLOUD14
Parent:         NET-172-0-0-0-0
NetName:        CLOUDFLARENET
NetRange:       172.64.0.0 - 172.71.255.255
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:        2015-02-25
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:      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


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:      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

Nearby Ranges

BGP prefixes that overlap with 172.66.0.0/16

No nearby ranges found.

Hosted domains

There are 263,073 domain names hosted across 3,783 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.66.170.130	infopetworld.com	214646
172.66.175.209	bhl-china.org	3788
172.66.172.60	bhl-china.org	3785
172.66.168.226	bhl-china.org	3781
172.66.175.226	simsfinds.com	3431
172.66.161.202	linklist.bio	2667
172.66.163.43	beacons.ai	1386
172.66.162.103	worthy.com	852
172.66.167.97	namebright.com	830
172.66.174.208	faroutmagazine.co.uk	467
172.66.167.234	solo.to	466
172.66.160.79	recruit.net	422
172.66.173.52	cohley.com	367
172.66.162.178	cadac.com	358
172.66.168.99	clovia.com	342
172.66.174.229	motoward.co.uk	317
172.66.172.31	atpflightschool.com	275
172.66.166.61	instagc.com	272
172.66.167.252	american.edu	229
172.66.163.1	print24.com	222

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
172.66.174.116	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.164.9	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.170.168	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.160.84	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.166.23	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.161.251	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.167.61	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.171.124	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.163.146	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.169.70	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.175.205	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.165.157	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.172.30	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.162.128	AS13335 Cloudflare, Inc.	`0.13ms` from Auckland, NZ
172.66.173.49	AS13335 Cloudflare, Inc.	`0.11ms` from Lima, PE
172.66.168.112	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
178.118.116.116	AS6848 Telenet BV	`7.41ms` from Brussels, BE
189.174.196.244	AS8151 UNINET	`12.38ms` from Cancún, MX
221.8.150.84	AS4837 CHINA UNICOM China169 Backbone	`5.50ms` from Changchun, CN
65.99.196.228	AS17378 TierPoint, LLC	`0.41ms` from Dallas, US
64.186.62.116	AS26554 US Signal Company, L.L.C.	`0.45ms` from Detroit, US
94.114.70.180	AS3209 Vodafone GmbH	`12.30ms` from Frankfurt am Main, DE
113.107.77.36	AS4134 CHINANET-BACKBONE	`9.67ms` from Guangzhou, CN
195.10.254.4	AS8553 Avensys Networks Ltd	`3.68ms` from London, GB
66.206.120.116	AS46887 Crown Castle Fiber LLC	`1.71ms` from New York City, US
188.93.23.164	AS49505 JSC Selectel	`1.01ms` from Saint Petersburg, RU
182.221.81.4	AS17858 LG POWERCOMM	`6.99ms` from Seoul, KR
180.68.8.132	AS9318 SK Broadband Co Ltd	`2.68ms` from Seoul, KR
54.249.75.180	AS16509 Amazon.com, Inc.	`0.14ms` from Tokyo, JP
210.234.182.132	AS2516 KDDI CORPORATION	`11.60ms` from Tokyo, JP
207.65.210.196	AS2527 Sony Network Communications Inc.	`1.18ms` from Tokyo, JP
92.67.10.164	AS1136 KPN B.V.	`2.24ms` from Amsterdam, NL
185.200.177.36	AS216154 CLODO CLOUD SERVICE CO. L.L.C	`0.33ms` from Amsterdam, NL
172.201.170.100	AS8075 Microsoft Corporation	`0.28ms` from Amsterdam, NL
98.16.163.36	AS7029 Windstream Communications LLC	`7.86ms` from Atlanta, US
34.218.216.20	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
135.119.252.52	AS8075 Microsoft Corporation	`0.34ms` from Boydton, US
209.236.128.100	AS397836 Northcentral Electric Cooperative	`16.42ms` from Chicago, US
207.182.141.148	AS10297 eNET Inc.	`3.71ms` from Cincinnati, US
95.40.2.36	AS16509 Amazon.com, Inc.	`0.10ms` from Hong Kong, HK
63.153.101.36	AS209 CenturyLink Communications, LLC	`14.96ms` from Seattle, US

Traceroute

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

traceroute -a -n -q1 -f4 172.66.170.219

traceroute to 172.66.170.219 (172.66.170.219): 64 hops max, 52 byte packets

4 [AS13335] 172.69.220.2 0.762 ms

5 [AS13335] 172.66.170.219 0.164 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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