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:      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


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

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

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
181.122.123.244	AS23201 Telecel S.A.	`10.99ms` from Asuncion, PY
34.209.3.84	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
85.99.124.52	AS9121 Turk Telekomunikasyon Anonim Sirketi	`8.74ms` from Bursa, TR
125.67.1.52	AS4134 CHINANET-BACKBONE	`13.74ms` from Chengdu, CN
77.176.51.196	AS6805 Telefonica Germany GmbH & Co.OHG	`4.56ms` from Duesseldorf, DE
159.195.24.212	AS197540 netcup GmbH	`3.34ms` from Frankfurt am Main, DE
166.1.194.164	AS62240 Clouvider	`0.24ms` from Frankfurt am Main, DE
86.115.23.116	AS1759 Telia Finland Oyj	`0.84ms` from Helsinki, FI
213.74.103.180	AS34984 Superonline Iletisim Hizmetleri A.S.	`1.67ms` from Istanbul, TR
142.247.238.228	AS25019 Saudi Telecom Company JSC	`5.83ms` from Jeddah, SA
175.174.106.20	AS4837 CHINA UNICOM China169 Backbone	`11.98ms` from Liaoyang, CN
82.42.113.68	AS5089 Virgin Media Limited	`11.35ms` from London, GB
126.82.234.148	AS17676 SoftBank Corp.	`9.14ms` from Osaka, JP
209.120.237.84	AS3257 GTT Communications Inc.	`0.14ms` from San Jose, US
66.235.23.116	AS11404 Wave Broadband	`4.35ms` from Seattle, US
182.223.99.36	AS17858 LG POWERCOMM	`1.99ms` from Seoul, KR
46.238.14.132	AS8717 A1 Bulgaria EAD	`0.67ms` from Sofia, BG
18.177.91.164	AS16509 Amazon.com, Inc.	`0.20ms` from Tokyo, JP
68.232.71.4	AS21570 Accelerated Connections Inc.	`9.65ms` from Toronto, CA
107.175.243.100	AS36352 HostPapa	`0.43ms` from Dallas, US
120.55.206.84	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`3.81ms` from Hangzhou, CN
113.168.186.148	AS45899 VNPT Corp	`2.19ms` from Hanoi, VN
123.191.227.164	AS4837 CHINA UNICOM China169 Backbone	`14.06ms` from Liaoyang, CN
212.90.98.100	AS204916 LLC Vpsville	`0.81ms` from Moscow, RU
151.196.111.132	AS701 Verizon Business	`4.11ms` from Philadelphia, US

Traceroute

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

traceroute -a -n -q1 -f2 -m8 173.37.0.10

traceroute to 173.37.0.10 (173.37.0.10): 8 hops max, 52 byte packets

2 [AS15169] 172.253.75.82 108.679 ms

3 *

4 [AS109] 128.107.2.9 118.784 ms

5 [AS109] 72.163.0.102 118.143 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Madrid, ES

On November 14th 2025

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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