Data as of Nov 14, 2026
205.246.18.0/24
No anonymizer space · no proxy exits in 30 daysNetwork Synergy Corporation · space held by Cogent Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 205.240.0.0/13 | AS174 | Internet provider | IP broker Rackdog (part) | 35 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 |
|---|---|---|---|---|---|---|
| 205.240.0.0/13 | 524,288 | COGENT-205-240-0 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Apr 24, 1995 | abuse@ |
| └ 205.246.18.0/24 | 256 | SPRINT-CDF612 | Network Synergy (NETWOR-18) · US | Reassigned | Jun 19, 1995 | — |
Network & registry
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 205.
240. 0. 0/ 13 - Registration type
- Direct Allocation
- Record created
- Apr 24, 1995
- Legacy
- yes
Origin network
AS19643
US
- Name
- Network Synergy Corporation
- Type
- Business
- Registered
- Jan 29, 2001
- Domain
- netsynergy.com
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 2
- Last change of origin
- Nov 2025
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16657 not the origin | RADB | Fibertech | MAINT-AS27506 | Nov 13, 2023 |
| AS19643 | RADB | Network Synergy SMFR | MAINT-AS27506 | Nov 13, 2023 |
| AS20115 not the origin | RADB | Charter Advertised Space | MAINT-CHTR-WD | Nov 13, 2023 |
| AS46887 not the origin | RADB | CCF Customer Route Proxy | MAINT-AS27506 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 205.
246. 18. 0/ 24 - Netname
- SPRINT-CDF612
- Registrant
- Network Synergy
- Organization
- Network Synergy (NETWOR-18)
- Org address
- 126 Monroe Turnpike, Trumbull, CT, 06611
- Org country
- US
- Type
- Reassigned
- Handle
- NET-205-246-18-0-1
- Parent
- NET-205-240-0-0-1
- Created
- Jun 19, 1995
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 24, 1995
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN