Data as of Nov 7, 2026
50.226.44.0/24
No anonymizer space · no proxy exits in 30 daysProfessional Ambulance & Oxygen Service, Inc. · 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 | 11,480 1,124 always on | Comcast Cable Communications, LLC |
Network & registry
Origin network
AS36717
US
- Name
- Professional Ambulance & Oxygen Service, Inc.
- Type
- Business
- Registered
- Mar 17, 2009
- Domain
- proems.com
- Industry
- Health Care Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2017
- Current origin since
- May 2017 · 9.5 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 50.226.44.0/24 | AS36717 | /24 | ARIN | RPKI valid |
| 50.128.0.0/9 | AS7922 | /9 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS36717 | RADB | Professional Ambulance & Oxygen Service, Inc | MAINT-AS7029 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 50.
128. 0. 0/ 9 - Netname
- CCCH3-4
- Registrant
- Comcast Cable Communications, LLC
- Organization
- Comcast Cable Communications, LLC (CCCS)
- Org address
- 1800 Bishops Gate Blvd, Mt Laurel, NJ, 08054
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-50-128-0-0-1
- Parent
- NET-50-0-0-0-0
- Created
- Oct 21, 2010
- 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