209.181.138.0/23

AS209 · CenturyLink Communications, LLC

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Summary

Country	United States
Domain	uswest.net
ASN	AS209
Parent Range	209.180.0.0/15
Registry	ARIN
ID	USW-CAYLXNA

WHOIS Details

NetHandle:      NET-209-181-138-0-1
OrgID:          CSL-16
Parent:         NET-209-180-0-0-1
NetName:        USW-CAYLXNA
NetRange:       209.181.138.0 - 209.181.138.7
NetType:        reassignment
RegDate:        1999-01-08
Updated:        1999-01-08
TechHandle:     GR110-ARIN
Source:         ARIN


OrgID:          CSL-16
OrgName:        CAYLX Software, Ltd.
CanAllocate:    
Street:         127 SW 156th Street #200
City:           Seattle
State/Prov:     WA
Country:        US
PostalCode:     98166
RegDate:        1999-01-08
Updated:        2011-09-24
OrgAdminHandle: GR110-ARIN
OrgTechHandle:  GR110-ARIN
OrgAbuseHandle: GR110-ARIN
Source:         ARIN


POCHandle:      GR110-ARIN
IsRole:         N
LastName:       Rowe
FirstName:      Greg
Street:         600 Stinson Blvd
City:           Minneapolis
State/Prov:     MN
Country:        US
PostalCode:     55413
RegDate:        1995-01-25
Updated:        2004-01-12
OfficePhone:    +1-800-672-8520
FaxPhone:       +1-612-672-8537
Mailbox:        dns-info@uswest.net
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 209.181.138.0/23

Range	ASN	Company	Num of IPs
209.180.0.0/15	AS13649	CenturyLink Communications, LLC	131,072
209.180.0.0/15	AS209	CenturyLink Communications, LLC	131,072
209.180.0.0/15	AS3356	CenturyLink Communications, LLC	131,072
209.180.0.0/15	AS54241	CenturyLink Communications, LLC	131,072

Nearby Ranges

BGP prefixes that overlap with 209.181.0.0/16

Range	ASN	Company	Num of IPs
209.180.0.0/15	AS13649	CenturyLink Communications, LLC	131,072
209.180.0.0/15	AS209	CenturyLink Communications, LLC	131,072
209.180.0.0/15	AS3356	CenturyLink Communications, LLC	131,072
209.180.0.0/15	AS54241	CenturyLink Communications, LLC	131,072

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
209.181.138.39	AS209 CenturyLink Communications, LLC	`2.56ms` from Seattle, US
209.181.139.174	AS209 CenturyLink Communications, LLC	`17.75ms` from Seattle, US

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
113.178.18.87	AS45899 VNPT Corp	`1.28ms` from Hanoi, VN
218.38.203.87	AS9318 SK Broadband Co Ltd	`1.09ms` from Incheon, KR
88.4.32.167	AS3352 TELEFONICA DE ESPANA S.A.U.	`6.35ms` from Madrid, ES
51.44.15.71	AS16509 Amazon.com, Inc.	`0.45ms` from Paris, FR
221.159.80.71	AS4766 Korea Telecom	`5.05ms` from Seoul, KR
104.243.194.135	AS9009 M247 Europe SRL	`0.15ms` from Stockholm, SE
15.190.21.55	AS16509 Amazon.com, Inc.	`1.61ms` from Tel Aviv, IL
184.30.201.231	AS16625 Akamai Technologies, Inc.	`0.56ms` from Bogotá, CO
120.40.149.7	AS4134 CHINANET BACKBONE	`4.89ms` from Fuzhou, CN
151.40.173.167	AS1267 WIND TRE S.P.A.	`7.65ms` from Milan, IT
180.46.124.231	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.65ms` from Osaka, JP
27.197.156.151	AS4837 CHINA UNICOM China169 Backbone	`4.92ms` from Qingdao, CN
34.142.211.39	AS396982 Google LLC	`0.13ms` from Singapore, SG
126.7.224.199	AS17676 SoftBank Corp.	`2.96ms` from Tokyo, JP
125.168.247.231	AS9443 Vocus Retail	`1.41ms` from Brisbane, AU
111.26.80.119	AS134810 China Mobile Group JiLin communications corporation	`8.13ms` from Changchun, CN
82.29.247.23	AS30900 Sternforth Ltd. trading as WebWorld	`0.24ms` from Dublin, IE
194.163.51.183	AS197637 ropa GmbH	`10.73ms` from Frankfurt am Main, DE
111.43.25.87	AS132525 HeiLongJiang Mobile Communication Company Limited	`2.08ms` from Harbin, CN
8.130.31.167	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.94ms` from Jining, CN
144.125.134.103	AS394089 Google LLC	`0.41ms` from Moncks Corner, US
176.195.179.151	AS12714 PJSC MegaFon	`1.71ms` from Moscow, RU
82.194.233.167	AS8491 Scientific-Production Enterprise Business Sviaz Holding LLC	`0.80ms` from Moscow, RU
95.190.31.215	AS12389 PJSC Rostelecom	`6.72ms` from Novosibirsk, RU
68.124.227.247	AS7018 AT&T Enterprises, LLC	`1.60ms` from San Jose, 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 209.181.138.162

traceroute to 209.181.138.162 (209.181.138.162): 64 hops max, 52 byte packets

4 [AS3356] 4.68.38.174 134.09 ms

5 [AS209] 63.226.198.10 135.644 ms

6 [AS209] 209.181.138.162 151.239 ms

Measurement taken from

IPinfo ProbeNet in Edinburgh, GB

On April 24th 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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