173.39.128.0/19

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 173.39.128.0/19

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

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

IP Address	ASN	Details
173.39.145.33	AS109 CISCO SYSTEMS, INC.	`40.91ms` from Tokyo, JP
173.39.153.225	AS109 CISCO SYSTEMS, INC.	`41.31ms` from Tokyo, JP
173.39.152.195	AS109 CISCO SYSTEMS, INC.	`41.17ms` 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
180.223.92.99	AS2914 NTT America, Inc.	`0.19ms` from Ashburn, US
115.158.9.227	AS4538 China Education and Research Network Center	`19.16ms` from Beijing, CN
2.201.233.243	AS3209 Vodafone GmbH	`7.28ms` from Berlin, DE
204.64.198.3	AS1761 General Services Commission	`7.00ms` from Dallas, US
104.202.227.211	AS7459 Grande Communications Networks, LLC	`11.24ms` from Dallas, US
35.220.142.227	AS396982 Google LLC	`0.11ms` from Hong Kong, HK
124.112.8.195	AS4134 CHINANET-BACKBONE	`7.57ms` from Huai'an, CN
195.43.163.163	AS5602 Retelit Digital Services S.p.A.	`0.25ms` from Milan, IT
174.20.198.67	AS209 CenturyLink Communications, LLC	`1.59ms` from Minneapolis, US
61.118.248.147	AS4713 NTT DOCOMO BUSINESS,Inc.	`19.06ms` from Osaka, JP
189.33.2.35	AS28573 Claro NXT Telecomunicacoes Ltda	`6.40ms` from Osasco, BR
90.180.199.195	AS5610 O2 Czech Republic, a.s.	`6.06ms` from Prague, CZ
44.193.121.131	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
99.51.79.115	AS7018 AT&T Enterprises, LLC	`17.51ms` from San Jose, US
98.238.165.83	AS7922 Comcast Cable Communications, LLC	`7.32ms` from San Jose, US
178.132.85.99	AS57344 Telehouse EAD	`0.39ms` from Sofia, BG
183.81.148.227	AS38835 Buroserv Australia Pty Ltd	`1.85ms` from Sydney, AU
37.157.120.195	AS3249 Telia Eesti AS	`6.80ms` from Tallinn, EE
220.210.183.131	AS2497 Internet Initiative Japan Inc.	`2.12ms` from Tokyo, JP
78.34.179.163	AS8422 NetCologne Gesellschaft fur Telekommunikation mbH	`5.20ms` from Duesseldorf, DE
197.227.34.131	AS23889 Mauritius Telecom Ltd	`0.89ms` from Ebene, MU
20.255.199.115	AS8075 Microsoft Corporation	`0.30ms` from Hong Kong, HK
89.241.197.227	AS13285 TalkTalk Communications Limited	`2.21ms` from London, GB
13.42.81.3	AS16509 Amazon.com, Inc.	`0.20ms` from London, GB
62.211.45.51	AS3269 Telecom Italia S.p.A.	`4.34ms` from Milan, IT

Traceroute

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

traceroute -a -n -q1 -f5 -m10 173.39.136.73

traceroute to 173.39.136.73 (173.39.136.73): 10 hops max, 52 byte packets

5 [AS3491] 63.218.250.90 217.443 ms

6 [AS3491] 63.216.242.114 218.183 ms

7 [AS109] 128.107.20.5 218.27 ms

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Measurement taken from

IPinfo ProbeNet in Bogota, CO

On February 7th 2026

What are IP address ranges?

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