Data as of Nov 8, 2026
143.20.23.0/24
No anonymizer space · no proxy exits in 30 daysXTDEF Limited · space held by Net and Grid Research, LLC
Announcement
this exact prefix
RPKI valid
Announced by
Type
Unknown
Risk
40 / 100 · Medium
Leased space
IPv4 market
Path
2 · Leased from
4 · Use
Unknown
Lineage
How this block came to its use, oldest first. The whole IPv4 market →
143.20.23.0/24
From the registry to its use
- Apr 14, 2025Registry recordNet and Grid Research, LLCLEGACY143.20.0.0/16
- Jun 17, 2025– Jun 28, 2025
- Jun 17, 2025– Mar 19, 2026
- Jun 20, 2025AssignedXTDef LimitedLEGACY143.20.23.0/24
- Aug 16, 2025– Aug 27, 2025
- Mar 20, 2026– today
- Mar 25, 2026Route objectIPXORIPE route object for AS142561 XTDEF Limited, maintainer NETUTILS-MNT
- Mar 25, 2026Route objectIPXORADB route object for AS142561 XTDEF Limited, 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@ |
| └ 143.20.23.0/24 | 256 | RIPE-ENC-NUSANTARA-ID | XTDef Limited (ORG-XL114-RIPE) · HK | LEGACY | Jun 20, 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
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jun 2025
- Current origin since
- Mar 2026 · 8 mo
- Origin networks
- 3
- Last change of origin
- Mar 2026
Recorded history
History
- Handoffs
- 3
Whois
Registration for this announcement
- Range
- 143.
20. 23. 0/ 24 - Netname
- RIPE-ENC-NUSANTARA-ID
- Registrant
- XTDef Limited
- Registrant country
- ID
- Organization
- XTDef Limited (ORG-XL114-RIPE)
- Org country
- HK
- Type
- LEGACY
- Created
- Jun 20, 2025
- Updated
- Mar 25, 2026
- Maintainer
- netutils-mnt
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Aug 5, 1990
- Status
- assigned
Report abuse
Abuse contact
- report@
abuseradar. com - Name
- XTDef Limited
- Handle
- XL759-RIPE