Data as of Nov 9, 2026
154.21.212.0/23
No anonymizer space · no proxy exits in 30 daysLimestone Networks, Inc. · reallocated from Cogent Communications, LLC
Announcement
this exact prefix
No RPKI
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recent change
New origin Jul 2026
its first announcement on record
registry: reallocated to Limestone Networks, Inc. by Cogent Communications, LLC, Jul 17, 2026
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 154.21.0.0/16 since Sep 2018 | AS174 | Internet provider | 292 46 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 |
|---|---|---|---|---|---|---|
| 154.21.0.0/16 | 65,536 | COGENT-154-21-16 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Feb 5, 1992 | abuse@ |
| └ 154.21.212.0/23 | 512 | LIMESTONE-NETWORKS-CGNT-NET-38 | Limestone Networks, Inc. (LIMES-2) · US | Reallocated | Jul 17, 2026 | abuse@ |
Network & registry
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 154.
21. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Feb 5, 1992
- Legacy
- yes
- Reallocated to
- Limestone Networks, Inc. (LIMES-2)
- Reallocated range
- 154.
21. 212. 0/ 23 - Reallocated
- Jul 17, 2026
Origin network
AS46475
US
- Name
- Limestone Networks, Inc.
- Type
- Hosting
- Registered
- Sep 29, 2008
- Domain
- limestonenetworks.com
- Website
- www.limestonenetworks.com
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 29
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jul 2026
- Current origin since
- Jul 2026 · 4 mo
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS46475 | ARIN | Route Registered for Cogent Communications Customer - Limestone Networks | MNT-COGC | Jul 17, 2026 |
Whois
Registration for this announcement
- Range
- 154.
21. 212. 0/ 23 - Netname
- LIMESTONE-NETWORKS-CGNT-NET-38
- Registrant
- Limestone Networks, Inc.
- Organization
- Limestone Networks, Inc. (LIMES-2)
- Org address
- 400 S. Akard Street, Dallas, TX, 75202
- Org country
- US
- Type
- Reallocated
- Handle
- NET-154-21-212-0-1
- Parent
- NET-154-21-0-0-1
- Created
- Jul 17, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 5, 1992
- Status
- assigned
Report abuse
Abuse contact
- abuse@
limestonenetworks. com - Name
- Abuse
- Phone
- +1-214-586-0555
- Handle
- ABUSE1804-ARIN