Data as of Nov 9, 2026
50.171.142.0/24
No anonymizer space · no proxy exits in 30 daysAS396831 · space held by Comcast 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@ |
| └ 50.171.0.0/16 | 65,536 | CHICAGO-CCS-1 | Comcast Cable Communications, LLC (CCCS) · US | Reallocated | May 31, 2022 | abuse@ |
| └ 50.171.142.0/24 | 256 | QUANTUM-GROUP | Quantum Group (C09961344) · US | Reassigned | Aug 10, 2023 | abuse@ via CHICAGO-CCS-1 |
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
AS396831
ZZ
- Type
- Hosting
- Registered
- Nov 8, 2026
- Domain
- quantumcolor.com
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2023
- Current origin since
- Aug 2023 · 3.2 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 50.171.142.0/24 | AS396831 | /24 | ARIN | RPKI valid |
| 50.128.0.0/9 | AS7922 | /9 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 50.
171. 142. 0/ 24 - Netname
- QUANTUM-GROUP
- Registrant
- Quantum Group
- Organization
- Quantum Group (C09961344)
- Type
- Reassigned
- Handle
- NET-50-171-142-0-1
- Parent
- NET-50-171-0-0-1
- Created
- Aug 10, 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