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:        [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:      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

Nearby Ranges

BGP prefixes that overlap with 172.66.0.0/16

No nearby ranges found.

Hosted domains

There are 273,810 domain names hosted across 3,789 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	222613
172.66.175.226	simsfinds.com	3444
172.66.168.226	bhl-china.org	3294
172.66.170.5	bhl-china.org	3273
172.66.172.60	bhl-china.org	3186
172.66.175.209	bhl-china.org	3132
172.66.161.202	linklist.bio	2365
172.66.163.43	beacons.ai	1438
172.66.169.236	tarifcheck.de	996
172.66.167.97	namebright.com	800
172.66.174.208	faroutmagazine.co.uk	512
172.66.167.234	solo.to	469
172.66.173.52	cohley.com	433
172.66.168.99	roaminghunger.com	424
172.66.160.79	recruit.net	416
172.66.174.248	censor.net	374
172.66.174.229	staractionfigures.co.uk	359
172.66.162.178	cadac.com	351
172.66.165.98	smoobu.com	347
172.66.172.31	atpflightschool.com	293

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
172.66.163.27	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
172.66.174.49	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.161.253	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
172.66.173.243	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.166.168	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.162.82	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.175.164	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.171.19	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.168.78	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.160.200	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.165.96	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.169.13	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
172.66.172.46	AS13335 Cloudflare, Inc.	`0.12ms` from Lisbon, PT
172.66.167.7	AS13335 Cloudflare, Inc.	`0.12ms` from Lima, PE
172.66.170.137	AS13335 Cloudflare, Inc.	`0.13ms` from Lima, PE
172.66.164.245	AS13335 Cloudflare, Inc.	`0.13ms` 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
86.93.125.84	AS1136 KPN B.V.	`3.86ms` from Amsterdam, NL
44.235.191.148	AS16509 Amazon.com, Inc.	`0.22ms` from Boardman, US
186.109.163.180	AS7303 Telecom Argentina S.A.	`9.41ms` from Cordoba, AR
62.167.139.20	AS6730 Sunrise GmbH	`1.56ms` from Geneve, CH
141.83.41.68	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`1.83ms` from Hamburg, DE
113.170.199.36	AS45899 VNPT Corp	`4.13ms` from Ho Chi Minh City, VN
171.244.206.52	AS7552 Viettel Group	`0.22ms` from Ho Chi Minh City, VN
38.238.22.100	AS134548 DXTL Tseung Kwan O Service	`0.73ms` from Hong Kong, HK
20.204.54.20	AS8075 Microsoft Corporation	`0.15ms` from Lohogaon, IN
103.80.5.100	AS395363 Infoblox, Inc.	`0.89ms` from London, GB
46.61.226.20	AS12389 PJSC Rostelecom	`3.01ms` from Moscow, RU
194.254.240.20	AS2200 Renater	`1.09ms` from Paris, FR
208.47.103.20	AS14237 Beamspeed LLC	`5.15ms` from Phoenix, US
51.107.27.228	AS8075 Microsoft Corporation	`1.09ms` from Zuerich, CH
108.181.63.36	AS40676 Psychz Networks	`0.21ms` from Chicago, US
156.63.90.4	AS19902 Department of Administrative Services	`4.13ms` from Columbus, US
78.171.226.148	AS9121 Turk Telekomunikasyon Anonim Sirketi	`5.28ms` from Istanbul, TR
185.179.201.148	AS49544 i3D.net B.V	`0.18ms` from Johannesburg, ZA
156.78.0.4	AS2386 AT&T Enterprises, LLC	`11.12ms` from Los Angeles, US
175.33.7.228	AS4804 Microplex PTY LTD	`3.88ms` from Melbourne, AU
79.172.98.164	AS29124 Iskratelecom JSC	`0.92ms` from Moscow, RU
51.91.178.148	AS16276 OVH SAS	`0.07ms` from Roubaix, FR
69.43.201.100	AS22489 Castle Access Inc	`2.02ms` from San Diego, US
108.243.206.196	AS7018 AT&T Enterprises, LLC	`7.46ms` from San Jose, US
125.137.144.212	AS4766 Korea Telecom	`6.20ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f5 172.66.170.166

traceroute to 172.66.170.166 (172.66.170.166): 64 hops max, 52 byte packets

5 [AS8932] 185.48.241.25 0.937 ms

6 [AS13335] 172.66.170.166 0.233 ms

Measurement taken from

IPinfo ProbeNet in Yerevan, AM

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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