1. All IP Ranges
  2. 172.0.0.0/8
  3. 172.66.0.0/16
  4. AS13335  | 172.66.40.0/21

172.66.40.0/21

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 378,909 domain names hosted across 1,059 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
172.66.40.121 jetprintapp.com 79928
172.66.43.135 jetprintapp.com 79706
172.66.40.56 stackify.com 14324
172.66.43.200 aqar.fm 7261
172.66.40.99 manuals.plus 4768
172.66.43.157 manuals.plus 4471
172.66.47.131 xx777wa.com 2893
172.66.44.125 2765133.com 2846
172.66.40.89 mrguider.org 1392
172.66.43.167 mrguider.org 1326
172.66.40.193 javhub.net 1303
172.66.41.48 screengeek.net 1209
172.66.42.208 screengeek.net 1179
172.66.44.93 bst-hydepark.com 1134
172.66.47.163 ip777si.com 1133
172.66.40.63 easy-peasy.ai 1104
172.66.43.63 javhub.net 1079
172.66.43.193 easy-peasy.ai 1077
172.66.40.232 contra.com 1066
172.66.43.31 fontspace.com 1057

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

2,048 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
172.66.45.214 AS13335 Cloudflare, Inc. 0.13ms from Yerevan, AM
172.66.43.16 AS13335 Cloudflare, Inc. 0.13ms from Yerevan, AM
172.66.42.246 AS13335 Cloudflare, Inc. 0.13ms from Yerevan, AM
172.66.44.141 AS13335 Cloudflare, Inc. 0.13ms from Lisbon, PT
172.66.40.163 AS13335 Cloudflare, Inc. 0.12ms from Lisbon, PT
172.66.41.253 AS13335 Cloudflare, Inc. 0.13ms from Lisbon, PT
172.66.46.176 AS13335 Cloudflare, Inc. 0.13ms from Yerevan, AM
172.66.47.254 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
194.78.19.213 AS5432 Proximus NV 1.58ms from Brussels, BE
163.19.255.117 AS1659 Taiwan Academic Network (TANet) Information Center 6.46ms from Chang-hua, TW
39.45.102.133 AS17557 Pakistan Telecommunication Company Limited 1.99ms from Lahore, PK
88.12.177.37 AS3352 TELEFONICA DE ESPANA S.A.U. 1.28ms from Madrid, ES
79.8.9.133 AS3269 Telecom Italia S.p.A. 2.43ms from Milan, IT
68.198.234.69 AS6128 Cablevision Systems Corp. 11.01ms from New York City, US
50.53.10.21 AS20055 Wholesail networks LLC 1.53ms from Portland, US
46.13.89.101 AS13036 T-Mobile Czech Republic a.s. 3.82ms from Prague, CZ
13.62.116.53 AS16509 Amazon.com, Inc. 0.15ms from Stockholm, SE
177.32.48.117 AS28573 Claro NXT Telecomunicacoes Ltda 5.63ms from São Paulo, BR
100.6.124.229 AS701 Verizon Business 6.60ms from Ashburn, US
54.189.120.101 AS16509 Amazon.com, Inc. 0.21ms from Boardman, US
201.219.210.229 AS262215 ITELKOM 17.44ms from Bogota, CO
24.2.205.53 AS7922 Comcast Cable Communications, LLC 6.66ms from Boston, US
188.80.28.133 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 3.61ms from Braga, PT
156.212.146.85 AS8452 TE-AS 7.68ms from Cairo, EG
34.81.168.21 AS396982 Google LLC 0.14ms from Chang-hua, TW
161.65.215.133 AS140220 Sky Network Television Ltd 2.13ms from Christchurch, NZ
18.158.47.181 AS16509 Amazon.com, Inc. 0.14ms from Frankfurt am Main, DE
159.124.50.181 AS30103 Zoom Video Communications, Inc 0.71ms from Frankfurt am Main, DE
82.219.49.149 AS30740 Exa Networks Limited 0.29ms from London, GB
18.173.153.5 AS16509 Amazon.com, Inc. 3.18ms from Nuernberg, DE
75.112.138.229 AS33363 Charter Communications, Inc 1.70ms from Orlando, US
200.201.198.165 AS10733 DC MATRIX INTERNET S/A 0.91ms from Osasco, BR
200.108.61.85 AS14709 Cable Onda 13.57ms from Panama, PA

Traceroute

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

$
traceroute -a -n -q1 -f3 172.66.44.86
traceroute to 172.66.44.86 (172.66.44.86): 64 hops max, 52 byte packets
3 [AS8932] 185.48.241.27 0.928 ms
4 [AS13335] 172.66.44.86 0.229 ms
Measurement taken from IPinfo ProbeNet in Yerevan, AM
On

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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