Data as of Nov 5, 2026
148.77.128.0/17
No anonymizer space · no proxy exits in 30 daysCablevision Systems Corp. · space held by Optimum Online
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 148.77.128.0/17 | 32,768 | OPTO | Optimum Online (OPTO) · US | Direct Allocation | May 14, 2015 | hostmaster@ |
| └ 148.77.128.0/18 | 16,384 | OOL-STATIC-RH-NY-148-77-128-0-18 | unknown | — | — | — |
| └ 148.77.128.0/19 | 8,192 | OOL-STATIC-RH-WP-148-77-128-0-19 | unknown | — | — | — |
| └ 148.77.192.0/19 | 8,192 | OOL-STATIC-RH-NJ-148-77-192-0-19 | unknown | — | — | — |
| └ 148.77.192.0/19 | 8,192 | OOL-STATIC-RH-NJ-148-77-192-0-19 | unknown | — | — | — |
| └ 148.77.224.0/19 | 8,192 | OOL-STATIC-RH-CT-148-77-224-0-19 | unknown | — | — | — |
| └ 148.77.224.0/19 | 8,192 | OOL-STATIC-RH-WP-148-77-224-0-19 | unknown | — | — | — |
Network & registry
Origin network
AS6128
US
- Name
- Cablevision Systems Corp.
- Type
- Internet provider
- Domain
- cablevision.com
- Website
- www.optimum.net
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2026
- Current origin since
- Mar 2026 · 8 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 148.
77. 128. 0/ 17 - Netname
- OPTO
- Registrant
- Optimum Online
- Organization
- Optimum Online (OPTO)
- Org address
- 111 new south RD, Hicksville, NY, 11801
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-148-77-128-0-3
- Parent
- NET-148-0-0-0-0
- Created
- May 14, 2015
- RIR
- ARIN
- Country
- US
- Delegated
- May 14, 2015
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN