Data as of Nov 10, 2026
154.3.136.0/21
Anonymizer · ISP proxyCogent Communications, LLC
IPv4 market
Path
2 · Leased from
not leased
Operators, sellers and brokers
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
154.3.136.0/21
From the registry to its use
- Feb 5, 1992Registry recordCogent Communications, LLCDirect Allocation (legacy, pre-1997)154.3.0.0/16
- Sep 15, 2006– today
- Feb 13, 2019– today
- Jan 10, 2022AssignedCode 200 UABReassigned154.3.136.0/21
- todayUsedOxylabsProxy seller
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Anonymizer addresses | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 154.3.0.0/16 since Sep 2006 | AS174 | Internet provider | 1,0241.6%ISP proxy | 433 212 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 |
|---|---|---|---|---|---|---|
| 154.3.0.0/16 | 65,536 | COGENT-154-3-16 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Feb 5, 1992 | abuse@ |
| └ 154.3.136.0/21 | 2,048 | NET-154-3-136-0-1 | Code 200 UAB (C08158990) · FR | Reassigned | Jan 10, 2022 | abuse@ via COGENT-154-3-16 |
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
- 154.
3. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Feb 5, 1992
- Legacy
- yes
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2019
- Current origin since
- Feb 2019 · 7.7 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 154.
3. 136. 0/ 21 - Netname
- NET-154-3-136-0-1
- Registrant
- Code 200 UAB
- Organization
- Code 200 UAB (C08158990)
- Type
- Reassigned
- Handle
- NET-154-3-136-0-1
- Parent
- NET-154-3-0-0-1
- Created
- Jan 10, 2022
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 5, 1992
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN