Data as of Nov 7, 2026
209.23.207.0/24
No anonymizer space · no proxy exits in 30 daysJANUS Research Group · space held by Comcast Cable Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.23.192.0/18 since Feb 2011 | AS7922 | Business | 8 | 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 |
|---|---|---|---|---|---|---|
| 209.23.192.0/18 | 16,384 | COMCAST-BUSINESS-BLK4 | Comcast Cable Communications, LLC (CCCS) · US | Direct Allocation | Jan 13, 2003 | abuse@ |
| └ 209.23.207.0/24 | 256 | AER-NET | Atmospheric and Environmental Research, Inc. (C02662223) · US | Reassigned | Dec 21, 2010 | abuse@ via COMCAST-BUSINESS-BLK4 |
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
- 209.
23. 192. 0/ 18 - Registration type
- Direct Allocation
- Record created
- Jan 13, 2003
Origin network
AS33462
US
- Name
- JANUS Research Group
- Type
- Business
- Registered
- Dec 22, 2004
- Domain
- janusresearch.com
- Industry
- Law, Business, and Consulting Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2011
- Current origin since
- Jan 2011 · 16 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 209.23.207.0/24 | AS33462 | /24 | ARIN | RPKI valid |
| 209.23.192.0/18 | AS7922 | /18 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33462 | RADB | AS33462-AER | MAINT-AS27506 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 209.
23. 207. 0/ 24 - Netname
- AER-NET
- Registrant
- Atmospheric and Environmental Research, Inc.
- Organization
- Atmospheric and Environmental Research, Inc. (C02662223)
- Type
- Reassigned
- Handle
- NET-209-23-207-0-1
- Parent
- NET-209-23-192-0-1
- Created
- Dec 21, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 13, 2003
- Status
- assigned
Report abuse
Abuse contact
- abuse@
comcast. net - Name
- Network Abuse and Policy Observance
- Phone
- +1-888-565-4329
- Handle
- NAPO-ARIN