Data as of Nov 7, 2026
100.42.20.0/24
Anonymizer · ISP proxy3 residential-proxy exits · 30 daysCenturyLink Communications, LLC · space held by Fork Networking, LLC
Announcement
this exact prefix
RPKI valid
Announced by
Type
ISP proxy
Risk
90 / 100 · Critical
Recently moved
Recent change
New origin Jun 2026
from AS46841 Fork Networking, LLC, after 2.1 years unannounced
Residential-proxy exits
Proxy exits
3
1.2% of its addresses · 30 days
Providers
2
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
11K observations
Proxy providers listing exits
- ColaProxy
- Thordata
IPv4 market
Path
Announced by AS3561 since Jun 2026 · 4 mo ago
Operators, sellers and brokers
Proxy providers
| Name | Parent | In 100.42.20.0/24 | /24s |
|---|---|---|---|
| IPRoyal | 256100% | 1 |
Leased from
Owners leasing their own space
| Name | In 100.42.20.0/24 | /24s |
|---|---|---|
| Interworks Networking Services | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
100.42.20.0/24
From the registry to its use
- Nov 17, 2011Registry recordFork Networking, LLCDirect Allocation100.42.16.0/20
- Nov 22, 2011– Jun 27, 2016
- Feb 28, 2023– today
- Nov 7, 2023– Nov 30, 2023
- Feb 23, 2024– May 4, 2024
- Jun 24, 2026– today
- Jul 14, 2026AssignedCologixReassigned100.42.20.0/23
- todayUsedIPRoyalProxy seller
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 100.42.16.0/20 since Feb 2023 | AS46841 | Hosting | 13 | Fork Networking, 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 |
|---|---|---|---|---|---|---|
| 100.42.16.0/20 | 4,096 | FORK-NETWORKING | Fork Networking, LLC (FORKN) · US | Direct Allocation | Nov 17, 2011 | arin-noc@ |
| └ 100.42.20.0/23 | 512 | FORKN | Cologix (C11648841) · CA | Reassigned | Jul 14, 2026 | arin-noc@ via FORK-NETWORKING |
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
- Fork Networking, LLC
- Handle
- FORKN
- Range
- 100.
42. 16. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Nov 17, 2011
Origin network
AS3561
US
- Name
- CenturyLink Communications, LLC
- Type
- Internet provider
- Registered
- Oct 7, 1998
- Domain
- lumen.com
- Website
- www.lumen.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
- Reactivated
- First seen
- Nov 2023
- Current origin since
- Jun 2026 · 4 mo
- Origin networks
- 2
- Last change of origin
- Jun 2026
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 100.42.20.0/23 | AS3561 | /24 | ARIN | RPKI valid |
| 100.42.16.0/20 | AS46841 | /20 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 100.
42. 20. 0/ 23 - Netname
- FORKN
- Registrant
- Cologix
- Organization
- Cologix (C11648841)
- Type
- Reassigned
- Handle
- NET-100-42-20-0-1
- Parent
- NET-100-42-16-0-1
- Created
- Jul 14, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 17, 2011
- Status
- assigned
Report abuse
Abuse contact
- arin-noc@
forked. net - Name
- NOC
- Phone
- +1-503-662-2081
- Handle
- NOC11257-ARIN