Data as of Nov 12, 2026
47.17.136.0/24
No anonymizer space · no proxy exits in 30 daysCablevision Systems Corp. · space held by Optimum WiFi
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 47.16.0.0/14 since Oct 2014 | AS6128 | Residential | 4,626 916 always on |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 47. | 196,608 | NETBLK-WIFI-BLK6 | Optimum WiFi (CHL-54) · US | Direct Allocation | Feb 29, 2012 | abuse@ |
| └ 47.17.128.0/20 | 4,096 | OOL-CPE-EQUGNY-47-17-128-0-20 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 47.16.0.0/15
- Prefix
- 47.16.0.0/15
- Announced by
- AS6128 Cablevision Systems Corp.
- Type
- Residential
- Proxy exits
- 2,774
- Always-on exits
- 546
- RPKI
- RPKI valid
- Netname
- NETBLK-WIFI-BLK6
- Registrant
- Optimum WiFi
- RIR
- ARIN
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
Covering aggregate above, the prefix's own history below
47.16.0.0/15
Routing history
- Pattern
- Stable
- First seen
- Mar 2020
- Current origin since
- Mar 2020 · 6.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 47.16.0.0/15 | AS6128 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 47.
16. 0. 0 - 47. 18. 255. 255 - Netname
- NETBLK-WIFI-BLK6
- Registrant
- Optimum WiFi
- Organization
- Optimum WiFi (CHL-54)
- Org address
- 111 New South Rd, Hicksville, NY, 11801
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-47-16-0-0-1
- Parent
- NET-47-0-0-0-0
- Created
- Feb 29, 2012
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 29, 2012
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cv. net - Name
- OOL Hostmaster
- Phone
- +1-516-803-2400
- Handle
- OOLAB-ARIN