Data as of Nov 10, 2026
50.216.212.0/24
No anonymizer space · no proxy exits in 30 daysComcast Cable Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 50.128.0.0/9 since Mar 2011 | AS7922 | Residential | 11,549 1,142 always on | Comcast Cable Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 50.128.0.0/9 | 8,388,608 | CCCH3-4 | Comcast Cable Communications, LLC (CCCS) · US | Direct Allocation | Oct 21, 2010 | abuse@ |
| └ 50.216.212.0/24 | 256 | INFOBLOX-INC | Infoblox Inc (C10231642) · US | Reassigned | Oct 4, 2023 | abuse@ via CCCH3-4 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
IPv4 market
Holder
- Organization
- Comcast Cable Communications, LLC
- Handle
- CCCS
- Range
- 50.
128. 0. 0/ 9 - Registration type
- Direct Allocation
- Record created
- Oct 21, 2010
Origin network
AS33651
US
- Name
- Comcast Cable Communications, LLC
- Type
- Internet provider
- Registered
- Feb 16, 2005
- Domain
- comcast.com
- Website
- corporate.comcast.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2021
- Current origin since
- Mar 2021 · 5.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 50.216.212.0/24 | AS33651 | /24 | ARIN | RPKI valid |
| 50.216.212.0/24 | AS33667 | /24 | ARIN | Another network |
| 50.128.0.0/9 | AS7922 | /9 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 50.
216. 212. 0/ 24 - Netname
- INFOBLOX-INC
- Registrant
- Infoblox Inc
- Organization
- Infoblox Inc (C10231642)
- Type
- Reassigned
- Handle
- NET-50-216-212-0-1
- Parent
- NET-50-128-0-0-1
- Created
- Oct 4, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 21, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
comcast. net - Name
- Network Abuse and Policy Observance
- Phone
- +1-888-565-4329
- Handle
- NAPO-ARIN