173.37.0.0/20

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:        [email protected]
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:        [email protected]
Mailbox:        [email protected]
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 173.37.0.0/20

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

Nearby Ranges

BGP prefixes that overlap with 173.37.0.0/16

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

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

Read more

Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
1.156.165.148	AS1221 Telstra Limited	`14.54ms` from Brisbane, AU
34.79.41.36	AS396982 Google LLC	`0.14ms` from Brussels, BE
50.56.9.100	AS19994 Rackspace Hosting	`1.23ms` from Chicago, US
135.125.66.164	AS16276 OVH SAS	`0.10ms` from Gravelines, FR
171.240.158.196	AS7552 Viettel Group	`1.09ms` from Ho Chi Minh City, VN
24.92.120.4	AS11427 Charter Communications Inc	`4.78ms` from Houston, US
103.173.165.4	AS147081 PT Pusat Net Media	`8.94ms` from Jakarta, ID
15.220.222.228	AS16509 Amazon.com, Inc.	`0.68ms` from Kansas City, US
161.230.70.244	AS12353 Vodafone Portugal	`7.38ms` from Lisbon, PT
194.168.90.228	AS5089 Virgin Media Limited	`3.34ms` from London, GB
175.158.100.132	AS26658 HT	`0.26ms` from Los Angeles, US
76.137.181.36	AS7922 Comcast Cable Communications, LLC	`11.05ms` from Los Angeles, US
90.162.144.84	AS12479 Orange Espagne SA	`4.39ms` from Madrid, ES
178.216.246.20	AS59853 T-CONNECT SAS	`0.34ms` from Paris, FR
71.202.205.132	AS7922 Comcast Cable Communications, LLC	`10.64ms` from San Jose, US
60.112.235.68	AS17676 SoftBank Corp.	`2.95ms` from Tokyo, JP
157.105.113.100	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`1.77ms` from Tokyo, JP
64.238.210.68	AS7381 BroadbandONE, LLC	`1.21ms` from Toronto, CA
137.117.144.52	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
68.191.137.84	AS20115 Charter Communications LLC	`16.18ms` from Atlanta, US
182.53.181.164	AS23969 TOT Public Company Limited	`7.11ms` from Bangkok, TH
41.251.147.196	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.29ms` from Casablanca, MA
109.151.41.244	AS2856 British Telecommunications PLC	`3.50ms` from Erith, GB
217.230.172.36	AS3320 Deutsche Telekom AG	`1.48ms` from Frankfurt am Main, DE
176.70.61.68	AS1257 Tele2 Sverige AB	`0.50ms` from Goeteborg, SE

Traceroute

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

traceroute -a -n -q1 -f3 -m9 173.37.1.226

traceroute to 173.37.1.226 (173.37.1.226): 9 hops max, 52 byte packets

3 [AS3356] 4.69.143.225 111.768 ms

4 [AS3356] 4.59.34.66 125.215 ms

5 [AS109] 128.107.2.5 122.917 ms

6 [AS109] 72.163.0.102 110.161 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Edinburgh, GB

On January 30th 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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