173.39.152.0/21

AS109 · CISCO SYSTEMS, INC.

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Summary

Country	United States
Domain	cisco.com
ASN	AS109
Parent Range	173.36.0.0/14
Registry	ARIN
ID	CISCO-GEN-8

WHOIS Details

NetHandle:      NET-173-36-0-0-1
OrgID:          CS-2831
Parent:         NET-173-0-0-0-0
NetName:        CISCO-GEN-8
NetRange:       173.36.0.0 - 173.39.255.255
NetType:        allocation
Comment:        Geofeed https://www.cisco.com/web/automation/CiscoAS109_geoip.csv
RegDate:        2008-08-15
Updated:        2024-03-08
Source:         ARIN


OrgID:          CS-2831
OrgName:        CISCO SYSTEMS, INC.
CanAllocate:    
Street:         251 LITTLE FALLS DRIVE
City:           WILMINGTON
State/Prov:     DE
Country:        US
PostalCode:     19808
RegDate:        2023-06-07
Updated:        2024-02-16
OrgAdminHandle: GATC-ARIN
OrgTechHandle:  GATC-ARIN
OrgAbuseHandle: CISCO6-ARIN
OrgNOCHandle:   GATC-ARIN
Source:         ARIN


POCHandle:      CISCO6-ARIN
IsRole:         Y
LastName:       Cisco CSIRT
FirstName:      
Street:         7025 Kit Creek Road
City:           Research Triangle Park
State/Prov:     NC
Country:        US
PostalCode:     27709
RegDate:        2024-02-16
Updated:        2025-03-04
OfficePhone:    +1-408-527-3227
Mailbox:        csirt-notify@cisco.com
Source:         ARIN


POCHandle:      GATC-ARIN
IsRole:         Y
LastName:       GIS ARIN Technical Contact
FirstName:      
Street:         170 West Tasman Dr.
City:           San Jose
State/Prov:     CA
Country:        US
PostalCode:     95134
RegDate:        2012-05-20
Updated:        2025-03-25
OfficePhone:    +1-408-526-8888
Mailbox:        arin-tech@cisco.com
Mailbox:        cidr-block-admins@cisco.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 173.39.152.0/21

Range	ASN	Company	Num of IPs
173.36.0.0/14	AS109	CISCO SYSTEMS, INC.	262,144

Nearby Ranges

BGP prefixes that overlap with 173.39.0.0/16

Range	ASN	Company	Num of IPs
173.36.0.0/14	AS109	CISCO SYSTEMS, INC.	262,144
173.39.224.0/19	AS13445	Cisco Webex LLC	8,192

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
173.39.152.195	AS109 CISCO SYSTEMS, INC.	`41.17ms` from Tokyo, JP
173.39.153.225	AS109 CISCO SYSTEMS, INC.	`41.31ms` from Tokyo, JP

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
181.122.162.245	AS23201 Telecel S.A.	`8.19ms` from Asuncion, PY
23.70.37.245	AS7922 Comcast Cable Communications, LLC	`1.08ms` from Atlanta, US
89.206.158.117	AS8426 ClaraNET LTD	`0.61ms` from Erith, GB
72.61.179.133	AS47583 Hostinger International Limited	`0.55ms` from Frankfurt am Main, DE
84.183.249.229	AS3320 Deutsche Telekom AG	`3.26ms` from Hamburg, DE
5.78.177.5	AS212317 Hetzner Online GmbH	`0.22ms` from Hillsboro, US
211.169.175.245	AS3786 LG DACOM Corporation	`1.73ms` from Incheon, KR
108.228.84.165	AS7018 AT&T Enterprises, LLC	`5.30ms` from Los Angeles, US
112.84.234.85	AS4837 CHINA UNICOM China169 Backbone	`8.43ms` from Nanjing, CN
47.18.95.85	AS6128 Cablevision Systems Corp.	`3.00ms` from New York City, US
83.3.225.69	AS5617 Orange Polska Spolka Akcyjna	`3.60ms` from Poznan, PL
222.174.109.85	AS4134 CHINANET-BACKBONE	`5.42ms` from Qingdao, CN
39.81.130.85	AS4837 CHINA UNICOM China169 Backbone	`9.52ms` from Qingdao, CN
44.198.193.165	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
148.101.23.213	AS6400 Compañía Dominicana de Teléfonos S. A.	`2.98ms` from Santo Domingo, DO
43.142.143.197	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.93ms` from Shanghai, CN
36.154.198.197	AS56046 China Mobile communications corporation	`4.60ms` from Suzhou, CN
138.217.140.245	AS1221 Telstra Limited	`0.68ms` from Sydney, AU
178.193.1.53	AS3303 Swisscom (Switzerland) Ltd	`1.77ms` from Zuerich, CH
99.22.144.165	AS7018 AT&T Enterprises, LLC	`3.16ms` from Dallas, US
99.30.49.197	AS7018 AT&T Enterprises, LLC	`2.52ms` from Dallas, US
51.6.163.245	AS6871 Plusnet	`4.96ms` from Erith, GB
217.85.26.117	AS3320 Deutsche Telekom AG	`3.18ms` from Hamburg, DE
113.170.104.53	AS45899 VNPT Corp	`5.87ms` from Ho Chi Minh City, VN
123.178.196.53	AS4134 CHINANET-BACKBONE	`8.38ms` from Hohhot, CN

Traceroute

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

traceroute -a -n -q1 -m6 173.39.154.208

traceroute to 173.39.154.208 (173.39.154.208): 6 hops max, 52 byte packets

1 [AS15169] 72.14.239.222 105.978 ms

2 [AS5580] 203.190.230.90 111.921 ms

3 [AS109] 128.107.20.9 107.248 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Sydney, AU

On February 7th 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.

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