173.37.16.0/20

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 173.37.16.0/20

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

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

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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
213.207.17.4	AS24785 Broadband Hosting B.V.	`3.33ms` from Amsterdam, NL
69.255.30.52	AS7922 Comcast Cable Communications, LLC	`5.27ms` from Ashburn, US
20.41.23.132	AS8075 Microsoft Corporation	`0.30ms` from Boydton, US
41.61.249.20	AS36943 1 GRID (PTY) LTD	`0.62ms` from Cape Town, ZA
97.235.25.4	AS6167 Verizon Business	`11.28ms` from Chicago, US
183.178.83.132	AS10103 HK Broadband Network Ltd.	`0.60ms` from Hong Kong, HK
39.53.87.212	AS17557 Pakistan Telecommunication Company Limited	`19.41ms` from Karachi, PK
195.76.115.20	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.61ms` from Madrid, ES
34.160.219.148	AS396982 Google LLC	`0.07ms` from Melbourne, AU
153.130.131.52	AS4713 NTT DOCOMO BUSINESS,Inc.	`8.65ms` from Osaka, JP
112.243.93.68	AS4837 CHINA UNICOM China169 Backbone	`7.34ms` from Qingdao, CN
151.26.92.212	AS1267 WIND TRE S.P.A.	`11.54ms` from Rome, IT
14.86.117.244	AS4766 Korea Telecom	`6.75ms` from Seoul, KR
60.142.110.84	AS17676 SoftBank Corp.	`3.66ms` from Tokyo, JP
180.28.130.148	AS4713 NTT DOCOMO BUSINESS,Inc.	`9.80ms` from Tokyo, JP
31.216.225.244	AS50904 Nordlo Elevate AB	`2.72ms` from Umea, SE
157.151.189.84	AS31898 Oracle Corporation	`0.40ms` from Ashburn, US
23.36.8.4	AS16625 Akamai Technologies, Inc.	`0.59ms` from Atlanta, US
117.221.193.180	AS9829 National Internet Backbone	`12.88ms` from Bengaluru, IN
34.212.188.212	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
52.61.134.84	AS8987 Amazon Data Services Ireland Ltd	`0.36ms` from Boardman, US
101.177.150.228	AS1221 Telstra Limited	`4.43ms` from Brisbane, AU
35.195.215.196	AS396982 Google LLC	`0.16ms` from Brussels, BE
139.212.2.148	AS4837 CHINA UNICOM China169 Backbone	`1.24ms` from Changchun, CN
24.74.251.212	AS11426 Charter Communications Inc	`1.23ms` from Charlotte, 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 -m12 173.37.17.71

traceroute to 173.37.17.71 (173.37.17.71): 12 hops max, 52 byte packets

4 [AS6939] 184.104.196.231 26.074 ms

5 *

6 *

7 *

8 [AS6939] 216.66.79.74 156.251 ms

9 [AS109] 128.107.4.9 142.565 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

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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