1. All IP Ranges
  2. 172.0.0.0/8
  3. 172.81.0.0/16
  4. AS21859  | 172.81.120.0/21

172.81.120.0/21

AS21859  ·  Zenlayer Inc

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Summary

Country United States
Domain zenlayer.com
ASN AS21859
Registry ARIN
ID ZEN-VL-002

WHOIS Details

NetHandle:      NET-172-81-120-0-1
OrgID:          ZENLA-7
Parent:         NET-172-0-0-0-0
NetName:        ZEN-VL-002
NetRange:       172.81.120.0 - 172.81.127.255
NetType:        allocation
RegDate:        2015-05-14
Updated:        2018-03-12
Source:         ARIN


OrgID:          ZENLA-7
OrgName:        Zenlayer Inc
CanAllocate:    
Street:         21680 Gateway Center Dr. Suite 350
City:           Diamond Bar
State/Prov:     CA
Country:        US
PostalCode:     91765
RegDate:        2017-12-27
Updated:        2025-09-04
OrgAdminHandle: IPADM641-ARIN
OrgTechHandle:  IPADM641-ARIN
OrgTechHandle:  IPNOC27-ARIN
OrgTechHandle:  TANGR16-ARIN
OrgAbuseHandle: SOCOP-ARIN
OrgNOCHandle:   IPADM641-ARIN
OrgNOCHandle:   IPNOC27-ARIN
Source:         ARIN


POCHandle:      SOCOP-ARIN
IsRole:         Y
LastName:       SOC Ops
FirstName:      
Street:         900 N. Alameda St. Suite E
City:           Los Angeles
State/Prov:     CA
Country:        US
PostalCode:     90017
RegDate:        2016-01-14
Updated:        2025-03-25
OfficePhone:    +1-909-718-3558
Mailbox:        abuse@zenlayer.com
Source:         ARIN


POCHandle:      IPNOC27-ARIN
IsRole:         Y
LastName:       IPNOC
FirstName:      
Street:          21700 Copley Dr Suite 350
City:           Diamond Bar
State/Prov:     CA
Country:        US
PostalCode:     91765
RegDate:        2025-07-27
Updated:        2025-07-27
OfficePhone:    +1-800-858-7986
Mailbox:        ipnoc-t3@zenlayer.com
Source:         ARIN


POCHandle:      TANGR16-ARIN
IsRole:         N
LastName:       Tang
FirstName:      Ruifan
Street:         21700 Copley Dr Suite 350
City:           Diamond Bar
State/Prov:     CA
Country:        US
PostalCode:     91765
RegDate:        2025-07-27
Updated:        2025-07-27
OfficePhone:    +1-800-858-7986
Mailbox:        ruifan.tang@zenlayer.com
Source:         ARIN


POCHandle:      IPADM641-ARIN
IsRole:         Y
LastName:       IP ADMIN
FirstName:      
Street:         21680 Gateway Center Drive, Suite 350
City:           Diamond Bar
State/Prov:     CA
Country:        US
PostalCode:     91765
RegDate:        2012-10-18
Updated:        2025-03-25
OfficePhone:    +1-909-718-3558
MobilePhone:    +1-909-718-3558
Mailbox:        ipadmin@zenlayer.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that are contained by 172.81.120.0/21

Range ASN Company Num of IPs
172.81.127.0/24 AS21859 ZENLA-1 256
172.81.127.0/24 AS21859 ZENLA-1 256
172.81.127.0/24 AS62610 ZENLA-1 256
172.81.127.0/24 AS62610 ZENLA-1 256

Nearby Ranges

BGP prefixes that overlap with 172.81.0.0/16

Range ASN Company Num of IPs
172.81.192.0/18 AS45090 Tencent Cloud Computing (Beijing) Co., Ltd 16,384
172.81.64.0/20 AS32592 Uniti Fiber Holdings Inc. 4,096
172.81.160.0/20 AS14265 TPx Communications 4,096
172.81.64.0/20 AS13760 Uniti Fiber Holdings Inc. 4,096
172.81.176.0/21 AS394745 Lunanode Hosting Inc. 2,048
172.81.176.0/21 AS394745 Lunanode Hosting Inc. 2,048
172.81.176.0/21 AS174 Lunanode Hosting Inc. 2,048
172.81.176.0/21 AS174 Lunanode Hosting Inc. 2,048
172.81.16.0/22 AS18519 MTC Technologies 1,024
172.81.24.0/22 AS19528 QUESTHOST.COM, LLC 1,024
172.81.4.0/22 AS30417 BTIG LLC 1,024
172.81.188.0/22 AS32354 Unwired 1,024
172.81.140.0/22 AS36498 Access One Inc. 1,024
172.81.52.0/22 AS396107 Southern Broadband, LLC 1,024
172.81.20.0/22 AS399091 Inter Data Link Inc 1,024
172.81.28.0/22 AS399194 Satronics Satellites Sales and Service 1,024
172.81.32.0/22 AS17303 Netwire 1,024
172.81.116.0/22 AS54641 InMotion Hosting, Inc. 1,024
172.81.152.0/22 AS54858 Wave Broadband 1,024
172.81.148.0/22 AS1097 Sardis Telecom 1,024
172.81.156.0/22 AS14265 TPx Communications 1,024
172.81.100.0/23 AS140227 Hong Kong Communications International Co., Limited 512
172.81.38.0/23 AS397095 Setson LLC 512
172.81.8.0/24 AS7819 Ark Network, Inc. 256
172.81.139.0/24 AS16509 Greenway Health, LLC 256
172.81.144.0/24 AS212238 bvoip 256
172.81.145.0/24 AS212238 bvoip 256
172.81.146.0/24 AS212238 bvoip 256
172.81.147.0/24 AS212238 bvoip 256
172.81.127.0/24 AS21859 ZENLA-1 256
172.81.127.0/24 AS21859 ZENLA-1 256
172.81.128.0/24 AS27176 DataWagon, LLC 256
172.81.129.0/24 AS27176 DataWagon, LLC 256
172.81.131.0/24 AS27176 DataWagon, LLC 256
172.81.134.0/24 AS27176 DataWagon, LLC 256
172.81.135.0/24 AS27176 DataWagon, LLC 256
172.81.4.0/24 AS30417 BTIG LLC 256
172.81.75.0/24 AS36730 Transformyx, Inc. 256
172.81.36.0/24 AS399218 R B & W CORPORATION OF CANADA 256
172.81.57.0/24 AS399275 SOLID-PHOENIX 256
172.81.59.0/24 AS399275 SOLID SYSTEMS LLC 256
172.81.9.0/24 AS46480 Pekin Insurance 256
172.81.127.0/24 AS62610 ZENLA-1 256
172.81.127.0/24 AS62610 ZENLA-1 256
172.81.37.0/24 AS62943 DataTenant, LLC 256

Hosted domains

There are 10 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
172.81.125.243 pysbuy.com 1
172.81.124.219 offgrid.com.my 1
172.81.126.139 zhongbobaihui.top 1
172.81.125.242 pysbag.com 1
172.81.124.221 measia.energy 1
172.81.125.244 pysgoods.com 1
172.81.125.246 g2bag.com 1
172.81.124.220 aticasia.global 1

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

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

IP Address ASN Details
172.81.124.195 AS21859 Zenlayer Inc 0.70ms from Hong Kong, HK
172.81.127.168 AS62610 Zenlayer Inc 0.22ms from Hong Kong, HK
172.81.123.90 AS21859 Zenlayer Inc 0.73ms from Hong Kong, HK
172.81.126.189 AS21859 Zenlayer Inc 0.37ms from Hong Kong, HK
172.81.122.21 AS21859 Zenlayer Inc 0.76ms from Hong Kong, HK
172.81.121.144 AS21859 Zenlayer Inc 0.78ms from Hong Kong, HK
172.81.120.175 AS21859 Zenlayer Inc 0.21ms from Hong Kong, HK
172.81.125.177 AS21859 Zenlayer Inc 0.22ms from Hong Kong, HK

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
84.207.227.101 AS13237 euNetworks GmbH 0.52ms from Amsterdam, NL
97.89.186.37 AS20115 Charter Communications LLC 5.59ms from Atlanta, US
172.98.104.5 AS53828 NETWORK INNOVATIONS, LLC 0.22ms from Atlanta, US
198.168.123.5 AS400446 The Citizens Bank 13.24ms from Dallas, US
66.33.122.133 AS35847 Ezee Fiber 1.34ms from Houston, US
60.169.241.69 AS4134 CHINANET-BACKBONE 7.83ms from Huai'an, CN
45.51.51.197 AS20001 Charter Communications Inc 4.33ms from Los Angeles, US
185.227.151.21 AS43440 Digitale Suisse AG 0.15ms from Lugano, CH
71.37.207.149 AS209 CenturyLink Communications, LLC 3.81ms from Minneapolis, US
177.7.16.229 AS8167 V tal 1.18ms from Novo Hamburgo, BR
24.19.202.229 AS7922 Comcast Cable Communications, LLC 3.74ms from Seattle, US
118.56.229.181 AS4766 Korea Telecom 6.64ms from Seoul, KR
177.115.64.53 AS26599 TELEFÔNICA BRASIL S.A 3.94ms from São Paulo, BR
116.3.182.53 AS4837 CHINA UNICOM China169 Backbone 7.41ms from Tieling, CN
61.113.17.213 AS4713 NTT DOCOMO BUSINESS,Inc. 8.35ms from Tokyo, JP
205.200.132.37 AS7122 Bell Canada 1.02ms from Winnipeg, CA
219.154.68.53 AS4837 CHINA UNICOM China169 Backbone 3.83ms from Zhengzhou, CN
181.121.56.21 AS23201 Telecel S.A. 8.12ms from Asuncion, PY
50.223.97.149 AS7922 Comcast Cable Communications, LLC 8.72ms from Atlanta, US
81.83.24.181 AS6848 Telenet BV 7.17ms from Brussels, BE
74.128.69.53 AS10796 Charter Communications Inc 18.09ms from Columbus, US
93.244.72.5 AS3320 Deutsche Telekom AG 8.42ms from Duesseldorf, DE
120.241.0.213 AS9808 China Mobile Communications Group Co., Ltd. 6.40ms from Guangzhou, CN
13.33.171.37 AS16509 Amazon.com, Inc. 0.13ms from Hong Kong, HK
196.213.182.213 AS3741 Dimension Data 3.25ms from Johannesburg, ZA

Traceroute

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

$
traceroute -a -n -q1 -f3 172.81.122.20
traceroute to 172.81.122.20 (172.81.122.20): 64 hops max, 52 byte packets
4 *
5 *
6 [] 36.255.56.137 1.18 ms
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
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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