Data as of Nov 3, 2026
207.43.48.0/20
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 207.43.48.0/20 | /24s |
|---|---|---|
| Rackdog | 4,096100% | 16 |
Leased from
Owners leasing their own space
| Name | In 207.43.48.0/20 | /24s |
|---|---|---|
| Cogent Communications, LLC | 4,096100% | 16 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
207.43.48.0/20
From the registry to its use
- Jan 24, 1996Registry recordCogent Communications, LLCDirect Allocation (legacy, pre-1997)207.40.0.0/14
- May 9, 2005– May 16, 2024
- May 5, 2024– Nov 2, 2026
- Aug 16, 2025– Nov 2, 2026
- Aug 26, 2025Route objectRackdogRADB route object for AS6079 RCN, maintainer MAINT-AS398465
- May 27, 2026AssignedRCNReassigned207.43.0.0/18
- todayLeased fromRackdogIP broker
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 207.40.0.0/14 since May 2024 | AS174 | Internet provider | 42 2 always on | Cogent 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 |
|---|---|---|---|---|---|---|
| 207.40.0.0/14 | 262,144 | COGENT-207-40-0 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Jan 24, 1996 | [email protected] |
| └ 207.43.0.0/18 | 16,384 | RACKDOG-CGNT-NET-53 | RCN (C11605259) · US | Reassigned | May 27, 2026 | [email protected] via COGENT-207-40-0 |
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
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 207.40.0.0/14
- Registration type
- Direct Allocation
- Record created
- Jan 24, 1996
- 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
Summary
Routing history
- Pattern
- Stable
- First seen
- Aug 2025
- Current origin since
- Aug 2025 · 1.2 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS6079 | RADB | MAINT-AS398465 | Sep 11, 2025 |
Whois
Registration for this announcement
- Range
- 207.43.0.0/18
- Netname
- RACKDOG-CGNT-NET-53
- Registrant
- RCN
- Organization
- RCN (C11605259)
- Type
- Reassigned
- Handle
- NET-207-43-0-0-1
- Parent
- NET-207-40-0-0-1
- Created
- May 27, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 24, 1996
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN