66.76.240.0/20

AS19108 · Optimum

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Summary

Country	United States
Domain	optimum.com
ASN	AS19108
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:      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:      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:        2024-12-06
OfficePhone:    +1-866-232-5455
Mailbox:        hostmaster@alticeusa.com
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:        2024-10-21
OfficePhone:    +1-516-803-2300
Mailbox:        hostmaster@cv.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:        2024-10-21
OfficePhone:    +1-903-266-4800
Mailbox:        abuse@suddenlink.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:        2024-10-21
OfficePhone:    +1-866-232-5455
Mailbox:        hostmaster@cv.net
Mailbox:        noc@suddenlink.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 66.76.240.0/20

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 are 30 domain names hosted across 18 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
66.76.244.143	lsmonument.com	2
66.76.255.133	kanscat.com	2
66.76.252.198	ruthkelly.com	2
66.76.252.182	allianceworkcomp.com	1
66.76.240.162	nwoklaw.com	1
66.76.242.198	sbic.work	1
66.76.242.196	petibles.life	1
66.76.251.147	mpcitypay.net	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

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

IP Address	ASN	Details
66.76.243.178	AS19108 Optimum	`7.47ms` from Dallas, US
66.76.251.185	AS19108 Optimum	`3.67ms` from Dallas, US
66.76.253.1	AS19108 Optimum	`9.08ms` from Dallas, US
66.76.255.1	AS19108 Optimum	`9.85ms` from Richardson, US
66.76.249.1	AS19108 Optimum	`7.23ms` from Dallas, US
66.76.247.193	AS19108 Optimum	`6.67ms` from Dallas, US
66.76.246.225	AS19108 Optimum	`5.21ms` from Dallas, US
66.76.250.1	AS19108 Optimum	`6.52ms` from Dallas, US
66.76.242.1	AS19108 Optimum	`3.99ms` from Dallas, US
66.76.245.1	AS19108 Optimum	`9.96ms` from Dallas, US
66.76.241.1	AS19108 Optimum	`8.32ms` from Dallas, US
66.76.244.1	AS19108 Optimum	`9.95ms` from Dallas, US
66.76.240.1	AS19108 Optimum	`8.32ms` from Dallas, US
66.76.252.1	AS19108 Optimum	`9.07ms` from Dallas, US
66.76.254.1	AS19108 Optimum	`9.05ms` from Dallas, US
66.76.248.1	AS19108 Optimum	`6.63ms` 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
104.165.174.4	AS12083 WideOpenWest Finance LLC	`0.37ms` from Ashburn, US
184.58.193.212	AS10796 Charter Communications Inc	`5.22ms` from Chicago, US
173.2.35.52	AS6128 Cablevision Systems Corp.	`5.67ms` from New York City, US
20.236.147.4	AS8075 Microsoft Corporation	`0.33ms` from San Antonio, US
118.89.172.228	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.35ms` from Shanghai, CN
94.156.25.132	AS34224 Neterra Ltd.	`0.43ms` from Sofia, BG
71.199.173.164	AS7922 Comcast Cable Communications, LLC	`4.84ms` from Atlanta, US
219.89.21.68	AS4771 Spark New Zealand Trading Ltd.	`9.98ms` from Auckland, NZ
166.117.167.132	AS16509 Amazon.com, Inc.	`0.04ms` from Bangkok, TH
41.34.212.100	AS8452 TE-AS	`4.00ms` from Cairo, EG
74.133.71.4	AS10796 Charter Communications Inc	`8.29ms` from Columbus, US
187.228.104.228	AS8151 UNINET	`0.89ms` from Guadalajara, MX
123.157.45.212	AS4837 CHINA UNICOM China169 Backbone	`8.34ms` from Hangzhou, CN
128.249.181.4	AS302 Baylor College of Medicine	`0.66ms` from Houston, US
86.186.227.68	AS2856 British Telecommunications PLC	`6.37ms` from London, GB
217.85.242.68	AS3320 Deutsche Telekom AG	`4.51ms` from Nuernberg, DE
179.177.183.68	AS18881 TELEFÔNICA BRASIL S.A	`7.63ms` from São Paulo, BR
60.244.252.196	AS7482 Asia Pacific On-line Service Inc.	`6.41ms` from Taipei, TW
140.78.103.36	AS1205 University Linz	`3.15ms` from Vienna, AT
42.233.60.132	AS4837 CHINA UNICOM China169 Backbone	`3.40ms` from Zhengzhou, CN
2.203.78.244	AS3209 Vodafone GmbH	`8.39ms` from Berlin, DE
108.255.68.36	AS7018 AT&T Enterprises, LLC	`19.19ms` from Chicago, US
98.17.223.84	AS7029 Windstream Communications LLC	`11.65ms` from Chicago, US
70.171.65.36	AS22773 Cox Communications Inc.	`15.83ms` from Dallas, US
54.78.66.84	AS16509 Amazon.com, Inc.	`0.23ms` from Dublin, IE

Traceroute

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

traceroute -a -n -q1 -f2 66.76.252.36

traceroute to 66.76.252.36 (66.76.252.36): 64 hops max, 52 byte packets

2 [AS28886] 217.28.48.73 5.425 ms

3 *

4 *

5 *

6 [AS3356] 4.26.123.86 133.685 ms

7 *

8 *

9 *

10 *

11 [AS19108] 66.76.252.36 167.457 ms

Measurement taken from

IPinfo ProbeNet in Riga, LV

On October 30th 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.

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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