Data as of Nov 9, 2026
66.247.0.0/16
No anonymizer space · no proxy exits in 30 daysCogent Communications, LLC
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 66.247.104.0/22 since Nov 2007 | AS17402 | Residential | Cogent Communications, LLC via CenturyLink 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 |
|---|---|---|---|---|---|---|
| 66.247.0.0/16 | 65,536 | COGENT-66-247-0 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Mar 20, 2002 | abuse@ |
| └ 66.247.104.0/22 | 1,024 | SL-CTL-EMBQ-66-247-104-0-1 | CenturyLink Communications, LLC (CCL-534) · US | Reallocated | Dec 30, 2020 | abuse@ |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
65,536 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 64,256 | 98% | 3 | |
| Residential | 1,280 | 2.0% | 2 |
Network & registry
Origin network
AS174
US
- Name
- Cogent Communications, LLC
- Type
- Internet provider
- Registered
- May 16, 1996
- Domain
- cogentco.com
- Website
- www.cogentco.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 1,623
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- May 2005
- Current origin since
- May 2024 · 2.5 yr
- Origin networks
- 2
- Last change of origin
- May 2024
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 66.
247. 0. 0/ 16 - Netname
- COGENT-66-247-0
- Registrant
- Cogent Communications, LLC
- Organization
- Cogent Communications, LLC (COGC)
- Org address
- 2450 N Street NW, Washington, DC, 20037
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-66-247-0-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Mar 20, 2002
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 20, 2002
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN