66.76.173.0/24

AS400947 · Shannon Medical Center

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Summary

Country	United States
Domain	optimum.com
ASN	AS400947
Parent Range	66.76.0.0/16
Registry	ARIN
ID	SUDDE-NETBLK-66-76-0-0

WHOIS Details

NetHandle:      NET-66-76-0-0-1
OrgID:          SUDDE
Parent:         NET-66-0-0-0-0
NetName:        SUDDE-NETBLK-66-76-0-0
NetRange:       66.76.0.0 - 66.76.255.255
NetType:        allocation
Comment:        ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
RegDate:        2001-02-06
Updated:        2012-03-20
AbuseHandle:    ABUSE1394-ARIN
Source:         ARIN


OrgID:          SUDDE
OrgName:        Optimum
CanAllocate:    
Street:         311 NNW Loop 323
City:           Tyler
State/Prov:     TX
Country:        US
PostalCode:     75701
RegDate:        2006-05-25
Updated:        2025-08-06
OrgAdminHandle: NETAD233-ARIN
OrgTechHandle:  AUIO-ARIN
OrgAbuseHandle: ABUSE6997-ARIN
OrgNOCHandle:   NOCSU37-ARIN
Source:         ARIN


POCHandle:      AUIO-ARIN
IsRole:         Y
LastName:       Altice USA Internet Operations
FirstName:      
Street:         1111 Stewart Ave.
City:           Bethpage
State/Prov:     NY
Country:        US
PostalCode:     11714
RegDate:        2018-02-05
Updated:        2025-12-18
OfficePhone:    +1-516-803-2300
Mailbox:        hostmaster@cv.net
Source:         ARIN


POCHandle:      NOCSU37-ARIN
IsRole:         Y
LastName:       NOC Suddenlink
FirstName:      
Street:         311 NNW Loop 323
City:           Tyler
State/Prov:     TX
Country:        US
PostalCode:     75701
RegDate:        2018-02-13
Updated:        2025-12-19
OfficePhone:    +1-866-232-5455
Mailbox:        hostmaster@cv.net
Mailbox:        noc@suddenlink.com
Source:         ARIN


POCHandle:      NETAD233-ARIN
IsRole:         Y
LastName:       NetAdmin
FirstName:      
Street:         311 NNW Loop 323
City:           Tyler
State/Prov:     TX
Country:        US
PostalCode:     75702
RegDate:        2017-02-03
Updated:        2025-12-18
OfficePhone:    +1-866-232-5455
Mailbox:        hostmaster@alticeusa.com
Source:         ARIN


POCHandle:      ABUSE1394-ARIN
IsRole:         Y
LastName:       Abuse
FirstName:      
Street:         1021 ESE Loop 323
Street:         Suite 100
City:           Tyler
State/Prov:     TX
Country:        US
PostalCode:     75701
RegDate:        2006-08-10
Updated:        2015-06-02
OfficePhone:    +1-903-266-4800
Mailbox:        abuse@suddenlink.net
Source:         ARIN


POCHandle:      ABUSE6997-ARIN
IsRole:         Y
LastName:       Abuse Suddenlink
FirstName:      
Street:         311 NNW Loop 323
City:           Tyler
State/Prov:     TX
Country:        US
PostalCode:     75702
RegDate:        2018-02-09
Updated:        2025-12-19
OfficePhone:    +1-903-266-4800
Mailbox:        abuse@suddenlink.net
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 66.76.173.0/24

Range	ASN	Company	Num of IPs
66.76.0.0/16	AS19108	Optimum	65,536
66.76.0.0/16	AS400947	Optimum	65,536

Nearby Ranges

BGP prefixes that overlap with 66.76.0.0/16

Range	ASN	Company	Num of IPs
66.76.0.0/16	AS19108	Optimum	65,536
66.76.0.0/16	AS400947	Optimum	65,536

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
66.76.173.37	shannonmychart.com	1

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

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

IP Address	ASN	Details
66.76.173.38	AS400947 Shannon Medical Center	`7.49ms` from Dallas, 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
111.198.172.168	AS4808 China Unicom Beijing Province Network	`2.93ms` from Beijing, CN
101.18.245.120	AS4837 CHINA UNICOM China169 Backbone	`11.62ms` from Beijing, CN
130.211.176.72	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
172.239.66.152	AS63949 Akamai Connected Cloud	`0.22ms` from Los Angeles, US
31.33.253.152	AS5410 Bouygues Telecom SA	`7.15ms` from Lyon, FR
83.60.235.56	AS3352 TELEFONICA DE ESPANA S.A.U.	`11.36ms` from Madrid, ES
31.133.200.120	AS57181 OOO RTK	`3.83ms` from Moscow, RU
174.181.53.136	AS7922 Comcast Cable Communications, LLC	`12.07ms` from Ashburn, US
157.55.171.136	AS8075 Microsoft Corporation	`0.40ms` from Chicago, US
40.172.1.216	AS16509 Amazon.com, Inc.	`0.11ms` from Dubai, AE
223.214.107.40	AS4134 CHINANET-BACKBONE	`10.11ms` from Huai'an, CN
207.44.93.200	AS3737 PenTeleData Inc.	`9.77ms` from Morris Plains, US
175.28.248.8	AS7679 QTnet,Inc.	`8.01ms` from Osaka, JP
177.83.174.40	AS28573 Claro NXT Telecomunicacoes Ltda	`7.39ms` from Osasco, BR
34.34.69.72	AS396982 Google LLC	`0.15ms` from Oudeschip, NL
78.197.30.184	AS12322 Free SAS	`1.98ms` from Paris, FR
31.39.45.184	AS5410 Bouygues Telecom SA	`10.20ms` from Paris, FR
31.30.123.40	AS16019 Vodafone Czech Republic a.s.	`2.82ms` from Prague, CZ
64.180.246.24	AS852 TELUS Communications Inc.	`4.57ms` from Seattle, US
220.95.30.184	AS4766 Korea Telecom	`5.60ms` from Seoul, KR
97.125.36.136	AS209 CenturyLink Communications, LLC	`11.36ms` from St. Louis, US
217.117.30.40	AS15440 UAB "Baltnetos komunikacijos"	`0.22ms` from Vilnius, LT
77.174.204.184	AS1136 KPN B.V.	`0.97ms` from Amsterdam, NL
45.15.209.40	AS203144 Host9x Web Solutions Limited	`0.48ms` from Amsterdam, NL
70.188.99.72	AS22773 Cox Communications Inc.	`12.82ms` from Dallas, US

Traceroute

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

traceroute -a -n -q1 66.76.173.1

traceroute to 66.76.173.1 (66.76.173.1): 64 hops max, 52 byte packets

1 [AS15169] 142.251.247.153 1.325 ms

2 [AS15169] 216.239.63.168 1.591 ms

3 *

4 *

5 *

6 *

7 [AS400947] 66.76.173.1 39.547 ms

Measurement taken from

IPinfo ProbeNet in Ashburn, US

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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