66.159.243.0/24

AS52129 · Proofpoint, Inc.

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Summary

Country	United States
Domain	proofpoint.com
ASN	AS52129
Registry	ARIN
ID	PROOF

WHOIS Details

NetHandle:      NET-66-159-224-0-1
OrgID:          PROOF
Parent:         NET-66-0-0-0-0
NetName:        PROOF
NetRange:       66.159.224.0 - 66.159.255.255
NetType:        allocation
RegDate:        2020-06-23
Updated:        2025-07-03
Source:         ARIN


OrgID:          PROOF
OrgName:        Proofpoint, Inc.
CanAllocate:    
Street:         925 W Maude Ave
City:           Sunnyvale
State/Prov:     CA
Country:        US
PostalCode:     94085
RegDate:        2007-10-16
Updated:        2021-06-15
OrgAdminHandle: NETWO2061-ARIN
OrgTechHandle:  NETWO2061-ARIN
OrgAbuseHandle: PAA19-ARIN
Source:         ARIN


POCHandle:      PAA19-ARIN
IsRole:         Y
LastName:       Proofpoint ARIN Abuse
FirstName:      
Street:         13997 S Minuteman Dr
City:           Draper
State/Prov:     UT
Country:        US
PostalCode:     84020
RegDate:        2014-09-08
Updated:        2024-06-13
OfficePhone:    +1-801-748-4494
Mailbox:        abuse@proofpoint.com
Source:         ARIN


POCHandle:      NETWO2061-ARIN
IsRole:         Y
LastName:       Network Operations
FirstName:      
Street:         925 W Maude Ave
City:           Sunnyvale
State/Prov:     CA
Country:        US
PostalCode:     94085
RegDate:        2007-10-15
Updated:        2025-08-16
OfficePhone:    +1-408-517-4710
OfficePhone:    +1-801-748-4444
Mailbox:        arin-management@proofpoint.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 66.159.0.0/16

Range	ASN	Company	Num of IPs
66.159.128.0/18	AS7018	AT&T Enterprises, LLC	16,384
66.159.64.0/19	AS17054	Expedient	8,192
66.159.192.0/19	AS394089	Palo Alto Networks, Inc	8,192
66.159.48.0/20	AS12028	MM Internet, Inc.	4,096
66.159.112.0/20	AS5690	Vianet Inc.	4,096
66.159.108.0/22	AS55053	2267921 ONTARIO LTD	1,024
66.159.254.0/24	AS52129	Proofpoint, Inc.	256
66.159.255.0/24	AS52129	Proofpoint, Inc.	256

Hosted domains

There are 2 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
66.159.243.161	novacyt.uk	2

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
66.159.243.157	AS52129 Proofpoint, Inc.	`0.34ms` from Amsterdam, NL

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
68.100.134.120	AS22773 Cox Communications Inc.	`4.38ms` from Ashburn, US
18.161.146.152	AS16509 Amazon.com, Inc.	`0.49ms` from Dallas, US
51.255.74.72	AS16276 OVH SAS	`0.07ms` from Gravelines, FR
119.164.86.88	AS4837 CHINA UNICOM China169 Backbone	`3.22ms` from Jinan, CN
162.238.47.120	AS7018 AT&T Enterprises, LLC	`9.98ms` from Miami, US
84.213.13.72	AS25400 Telia Norge AS	`7.35ms` from Sandefjord, NO
78.28.120.136	AS1257 Tele2 Sverige AB	`2.61ms` from Tallinn, EE
125.12.118.72	AS9824 JCOM Co., Ltd.	`7.78ms` from Tokyo, JP
52.83.93.184	AS135629 Ningxia West Cloud Data Technology Co.Ltd.	`0.52ms` from Zhongwei, CN
213.141.43.120	AS12946 R Cable y Telecable Telecomunicaciones, S.A.U.	`7.21ms` from A Coruna, ES
190.48.85.184	AS22927 Telefonica de Argentina	`2.57ms` from Buenos Aires, AR
91.134.79.8	AS16276 OVH SAS	`0.09ms` from Gravelines, FR
90.243.132.232	AS5378 Vodafone Limited	`4.76ms` from London, GB
47.197.191.72	AS5650 Frontier Communications of America, Inc.	`7.61ms` from Miami, US
81.5.103.168	AS25100 Non state educational institution Educational Scientific and Experimental Center of Moscow Institute of Physics and Technology	`1.06ms` from Moscow, RU
45.86.30.216	AS134450 HostRoyale Technologies Pvt Ltd	`1.26ms` from Mumbai, IN
176.146.157.248	AS5410 Bouygues Telecom SA	`3.03ms` from Paris, FR
128.139.217.8	AS378 IUCC - Israel InterUniversity Computation Center	`0.63ms` from Petaẖ Tiqva, IL
128.114.171.184	AS5739 University of California, Santa Cruz	`1.76ms` from San Jose, US
23.108.175.56	AS7203 Leaseweb USA, Inc.	`0.10ms` from San Jose, US
20.24.162.56	AS8075 Microsoft Corporation	`0.43ms` from Singapore, SG
168.195.26.248	AS265424 Horizontes Telecom LTDA	`7.68ms` from São Paulo, BR
113.233.169.152	AS4837 CHINA UNICOM China169 Backbone	`10.36ms` from Tieling, CN
74.176.40.152	AS8075 Microsoft Corporation	`0.16ms` from Tokyo, JP
111.31.23.232	AS9808 China Mobile Communications Group Co., Ltd.	`4.53ms` from Beijing, CN

Traceroute

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

traceroute -a -n -q1 -f4 66.159.243.105

traceroute to 66.159.243.105 (66.159.243.105): 64 hops max, 52 byte packets

4 [AS174] 154.54.62.249 0.723 ms

5 *

6 [AS52129] 66.159.243.105 0.341 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On March 13th 2026

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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