144.74.128.0/17

AS25978 · Rush University Medical Center

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Summary

Country	United States
Domain	rush.edu
ASN	AS25978
Registry	ARIN
ID	RUSHNET

WHOIS Details

NetHandle:      NET-144-74-0-0-1
OrgID:          RPLMC
Parent:         NET-144-0-0-0-0
NetName:        RUSHNET
NetRange:       144.74.0.0 - 144.74.255.255
NetType:        allocation
RegDate:        1990-11-16
Updated:        2021-12-14
Source:         ARIN


OrgID:          RPLMC
OrgName:        Rush University Medical Center
CanAllocate:    
Street:         1653 W. Congress Parkway
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60612
RegDate:        1990-11-16
Updated:        2024-12-04
OrgAdminHandle: MNS12-ARIN
OrgTechHandle:  CLUKE-ARIN
OrgAbuseHandle: KLO1-ARIN
Source:         ARIN


POCHandle:      KLO1-ARIN
IsRole:         N
LastName:       ODER
FirstName:      KARL
Street:         RUSH PRESBYTERIAN
Street:         1700 WEST VAN BUREN
City:           CHICAGO
State/Prov:     IL
Country:        US
PostalCode:     60612
RegDate:        2000-10-31
Updated:        2019-12-20
OfficePhone:    +1-312-942-8940
FaxPhone:       +1-312-563-8607
Mailbox:        koder@rush.edu
Source:         ARIN


POCHandle:      CLUKE-ARIN
IsRole:         N
LastName:       Clukey
FirstName:      Jay
Street:         1700 W. Van Buren
Street:         Ste. 374
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60612
RegDate:        2013-04-08
Updated:        2025-03-05
OfficePhone:    +1-312-942-4806
FaxPhone:       +1-312-942-4062
Mailbox:        jclukey@rush.edu
Source:         ARIN


POCHandle:      MNS12-ARIN
IsRole:         Y
LastName:       Manager of Network Services
FirstName:      
Street:         1700 W Van Buren
Street:         Suite 374
City:           Chicago
State/Prov:     IL
Country:        US
PostalCode:     60612
RegDate:        2007-10-02
Updated:        2024-12-04
OfficePhone:    +1-312-942-4242
Mailbox:        netinfra@rush.edu
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 144.74.0.0/16

No nearby ranges found.

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

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

IP Address	ASN	Details
144.74.137.26	AS25978 Rush University Medical Center	`1.48ms` from Chicago, US

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
171.22.179.1	AS41960 Nextpertise	`6.12ms` from Amsterdam, NL
37.46.194.241	AS6206 Netrouting B.V.	`0.74ms` from Amsterdam, NL
69.180.28.1	AS7922 Comcast Cable Communications, LLC	`1.32ms` from Atlanta, US
101.22.199.1	AS4837 CHINA UNICOM China169 Backbone	`9.83ms` from Beijing, CN
86.126.52.129	AS8708 DIGI ROMANIA S.A.	`4.99ms` from Bucharest, RO
92.85.145.1	AS9050 Orange Romania S.A.	`3.28ms` from Bucharest, RO
61.157.204.1	AS4134 CHINANET-BACKBONE	`7.55ms` from Chengdu, CN
74.81.192.1	AS11776 Breezeline	`7.18ms` from Chicago, US
149.154.54.1	AS30600 Metronet	`1.25ms` from Chicago, US
183.66.139.65	AS4134 CHINANET-BACKBONE	`3.52ms` from Chongqing, CN
162.155.17.129	AS10796 Charter Communications Inc	`1.91ms` from Cleveland, US
176.21.255.1	AS3292 TDC Holding A/S	`3.87ms` from Copenhagen, DK
91.228.10.129	AS209847 WorkTitans B.V.	`0.15ms` from Coventry, GB
191.216.107.129	AS8167 V tal	`0.40ms` from Curitiba, BR
72.48.141.177	AS7459 Grande Communications Networks, LLC	`5.24ms` from Dallas, US
182.60.180.1	AS9829 National Internet Backbone	`4.71ms` from Delhi, IN
20.216.5.177	AS8075 Microsoft Corporation	`1.37ms` from Dubai, AE
185.76.101.1	AS43279 Telespazio S.p.A.	`4.14ms` from Frosinone, IT
58.232.112.1	AS9318 SK Broadband Co Ltd	`1.77ms` from Incheon, KR
120.220.30.33	AS9808 China Mobile Communications Group Co., Ltd.	`4.16ms` from Jinan, CN
113.211.70.129	AS9534 Binariang Berhad	`2.72ms` from Kuala Lumpur, MY
92.244.66.1	AS2107 ARNES	`0.84ms` from Ljubljana, SI
31.49.25.193	AS2856 British Telecommunications PLC	`2.49ms` from London, GB
51.219.199.209	AS31655 Gamma Telecom Holdings Ltd	`1.04ms` from London, GB
5.226.56.1	AS49765 Comms365 Limited	`0.48ms` from London, GB

Traceroute

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

traceroute -a -n -q1 -m5 144.74.138.20

traceroute to 144.74.138.20 (144.74.138.20): 5 hops max, 52 byte packets

1 [AS31898] 140.91.242.4 0.077 ms

2 [AS15802] 91.74.125.170 0.427 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Abu Dhabi, AE

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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