Data as of Nov 8, 2026
143.20.52.0/24
Anonymizer · Datacenter proxy1 residential-proxy exit · 30 daysTravchis, LLC · space held by Net and Grid Research, LLC
Announcement
this exact prefix
RPKI valid
Announced by
Type
Datacenter proxy
Risk
85 / 100 · Critical
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
8
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
14 observations
Proxy providers listing exits
- BirdProxies
- GSocks
- Infatica
- NodeProxy
- ProxyEmpire
- RainProxy
- Shifter
- VantageProxies
IPv4 market
Path
4 · Use
Datacenter proxy
anonymizer space, operator not named
Operators, sellers and brokers
Leased from
Owners leasing their own space
| Name | In 143.20.52.0/24 | /24s |
|---|---|---|
| Gauss Research Laboratory | 256100% | 1 |
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
143.20.52.0/24
From the registry to its use
- Apr 14, 2025Registry recordNet and Grid Research, LLCLEGACY143.20.0.0/16
- Jun 17, 2025– Oct 26, 2025
- Oct 15, 2025– Oct 26, 2025
- Oct 15, 2025– today
- Oct 23, 2025Route objectIPXORIPE route object for AS25198 Interkvm Host SRL, maintainer NETUTILS-MNT
- Oct 23, 2025Route objectIPXORADB route object for AS25198 Interkvm Host SRL, maintainer MAINT-AS834
- Oct 24, 2025Route objectIPXORIPE route object for AS400909 Travchis, LLC, maintainer NETUTILS-MNT
- Oct 24, 2025Route objectIPXORADB route object for AS400909 Travchis, LLC, maintainer MAINT-AS834
- todayLeased fromIPXOIP broker
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 |
|---|---|---|---|---|---|---|
| 143.20.0.0/16 | 65,536 | us-netandgrid-19900805 | Net and Grid Research, LLC (ORG-NAGR1-RIPE) · US | LEGACY | Apr 14, 2025 | cthomas57@ |
| └ 143.20.0.0/17 | 32,768 | NET-143-20-0-0-17 | Internet Utilities Europe and Asia Limited (ORG-IL687-RIPE) · GB | LEGACY | Apr 17, 2025 | report@ |
| └ 143.20.52.0/24 | 256 | NET-143-20-52-0-24 | unknown | LEGACY | Oct 22, 2025 | report@ |
Network & registry
IPv4 market
Holder
- Organization
- Net and Grid Research, LLC
- Handle
- ORG-NAGR1-RIPE
- Range
- 143.
20. 0. 0/ 16 - Registration type
- LEGACY
- Record created
- Apr 14, 2025
- Legacy
- yes
Origin network
AS400909
US
- Name
- Travchis, LLC
- Type
- Hosting
- Registered
- Dec 15, 2023
- Domain
- e-know.net
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jun 2025
- Current origin since
- Oct 2025 · 1.1 yr
- Origin networks
- 3
- Last change of origin
- Oct 2025
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
Whois
Registration for this announcement
- Range
- 143.
20. 52. 0/ 24 - Netname
- NET-143-20-52-0-24
- Registrant country
- EU
- Organization
- Not stated by the registry
- Type
- LEGACY
- Created
- Oct 22, 2025
- Updated
- Oct 23, 2025
- Maintainer
- netutils-mnt
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Aug 5, 1990
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- Private Customer
- Handle
- PC20821-RIPE