Data as of Nov 11, 2026
204.242.2.0/23
Anonymizer · ISP proxyRCN · space held by Cogent Communications, LLC
IPv4 market
Path
4 · Use
ISP proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
IP brokers
| Name | In 204.242.2.0/23 | /24s |
|---|---|---|
| Rackdog | 512100% | 2 |
Leased from
Owners leasing their own space
| Name | In 204.242.2.0/23 | /24s |
|---|---|---|
| Cogent Communications, LLC | 512100% | 2 |
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 204.240.0.0/14 since May 2005 | AS174 | Internet provider | Cogent Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 204.240.0.0/14 | 262,144 | COGENT-204-240-14 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Dec 20, 1994 | abuse@ |
| └ 204.242.0.0/16 | 65,536 | RACKDOG-CGNT-NET-33 | RCN (C11605228) · US | Reassigned | May 27, 2026 | abuse@ via COGENT-204-240-14 |
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
Announced by
Covering announcement 204.242.0.0/20
- Prefix
- 204.242.0.0/20
- Announced by
- AS6079 RCN
- Type
- ISP proxy
- Anonymizer addresses
- 3,584 addresses · 88%
- Leased from
- IP broker Rackdog
- RPKI
- No RPKI
- Netname
- RACKDOG-CGNT-NET-33
- Registrant
- RCN
- RIR
- ARIN
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 204.
240. 0. 0/ 14 - Registration type
- Direct Allocation
- Record created
- Dec 20, 1994
- Legacy
- yes
Origin network
AS6079
US
- Name
- RCN
- Type
- Internet provider
- Registered
- Apr 4, 2001
- Domain
- astound.com
- Website
- www.astound.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
204.242.0.0/20
Routing history
- Pattern
- Stable
- First seen
- Mar 2022
- Current origin since
- Mar 2022 · 4.7 yr
- Origin networks
- 1
IRR
Route objects on 204.242.0.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS6079 | RADB | Rackdog | MAINT-AS6079 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
242. 0. 0/ 16 - Netname
- RACKDOG-CGNT-NET-33
- Registrant
- RCN
- Organization
- RCN (C11605228)
- Type
- Reassigned
- Handle
- NET-204-242-0-0-1
- Parent
- NET-204-240-0-0-1
- Created
- May 27, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 20, 1994
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN