137.239.221.0/24

AS31755 · Viskase Companies, Inc.

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Summary

Country	United States
Domain	viskase.com
ASN	AS31755
Registry	ARIN
ID	R89860

WHOIS Details

NetHandle:      NET-137-239-221-0-1
OrgID:          VISKA
Parent:         NET-137-239-192-0-1
NetName:        R89860
NetRange:       137.239.221.0 - 137.239.221.255
NetType:        reassignment
RegDate:        2025-05-01
Updated:        2025-05-01
Source:         ARIN


OrgID:          VISKA
OrgName:        Viskase Companies, Inc.
CanAllocate:    
Street:         333 E Butterfield Road
Street:         Suite 400
City:           Lombard
State/Prov:     IL
Country:        US
PostalCode:     60148
RegDate:        2007-01-09
Updated:        2025-12-15
OrgAdminHandle: JONES2933-ARIN
OrgTechHandle:  JONES2933-ARIN
OrgAbuseHandle: ABUSE1547-ARIN
Source:         ARIN


POCHandle:      ABUSE1547-ARIN
IsRole:         Y
LastName:       abuse
FirstName:      
Street:         8205 South Cass Ave
Street:         Suite 115
City:           Darien
State/Prov:     IL
Country:        US
PostalCode:     60561
RegDate:        2007-01-09
Updated:        2024-10-21
OfficePhone:    +1-630-874-0695
Mailbox:        abuse@viskase.com
Source:         ARIN


POCHandle:      JONES2933-ARIN
IsRole:         N
LastName:       Jones
FirstName:      Randy
Street:         333 Butterfield Road #400
City:           Lombard
State/Prov:     IL
Country:        US
PostalCode:     60148
RegDate:        2025-05-01
Updated:        2025-12-09
OfficePhone:    +1-630-874-0794
Mailbox:        randy.jones@viskase.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 137.239.0.0/16

Range	ASN	Company	Num of IPs
137.239.224.0/19	AS30029	Dobson Technologies - Transport and Telecom Solutions, LLC	8,192
137.239.234.0/23	AS30029	Dobson Technologies - Transport and Telecom Solutions, LLC	512
137.239.222.0/24	AS26502	Jabil, Inc	256
137.239.219.0/24	AS62735	L.A. CARE COMMUNITY HEALTH	256

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

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

IP Address	ASN	Details
137.239.221.2	AS31755 Viskase Companies, Inc.	`2.79ms` 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
20.25.60.216	AS8075 Microsoft Corporation	`0.47ms` from Ashburn, US
111.165.54.56	AS4837 CHINA UNICOM China169 Backbone	`4.82ms` from Beijing, CN
70.174.234.8	AS22773 Cox Communications Inc.	`5.27ms` from Dallas, US
39.112.104.216	AS9318 SK Broadband Co Ltd	`4.97ms` from Incheon, KR
43.218.82.168	AS16509 Amazon.com, Inc.	`0.69ms` from Jakarta, ID
46.245.234.136	AS57973 LLC VK	`0.55ms` from Kazan, RU
86.130.31.104	AS2856 British Telecommunications PLC	`2.65ms` from London, GB
149.28.70.184	AS20473 The Constant Company, LLC	`0.12ms` from Los Angeles, US
69.110.83.184	AS7018 AT&T Enterprises, LLC	`1.79ms` from Los Angeles, US
77.43.57.24	AS3302 Retelit Digital Services S.p.A.	`0.82ms` from Milan, IT
36.33.100.232	AS4837 CHINA UNICOM China169 Backbone	`11.19ms` from Nanjing, CN
20.199.126.56	AS8075 Microsoft Corporation	`0.39ms` from Paris, FR
73.175.10.168	AS7922 Comcast Cable Communications, LLC	`18.65ms` from Reston, US
125.243.4.24	AS17858 LG POWERCOMM	`1.72ms` from Seoul, KR
77.71.76.152	AS29687 Geodim Ltd.	`1.74ms` from Varna, BG
5.141.84.136	AS12389 PJSC Rostelecom	`0.84ms` from Yekaterinburg, RU
196.77.30.8	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.11ms` from Casablanca, MA
108.215.190.88	AS7018 AT&T Enterprises, LLC	`3.23ms` from Chicago, US
123.176.103.24	AS133380 Layerstack Limited	`1.06ms` from Hong Kong, HK
81.101.57.72	AS5089 Virgin Media Limited	`13.03ms` from London, GB
95.163.235.248	AS197695 Domain names registrar REG.RU, Ltd	`0.97ms` from Moscow, RU
180.63.158.200	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.27ms` from Osaka, JP
187.116.143.120	AS26599 TELEFÔNICA BRASIL S.A	`7.52ms` from Rio de Janeiro, BR
218.221.84.248	AS2527 Sony Network Communications Inc.	`2.37ms` from Tokyo, JP
64.77.117.248	AS13768 Aptum Technologies	`0.62ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f3 137.239.221.250

traceroute to 137.239.221.250 (137.239.221.250): 64 hops max, 52 byte packets

3 [AS7018] 12.247.252.249 1.345 ms

4 *

5 *

6 *

7 [AS31755] 137.239.221.250 3.149 ms

Measurement taken from

IPinfo ProbeNet in Chicago, US

On January 19th 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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