Data as of Nov 10, 2026
131.143.87.0/24
No anonymizer space · no proxy exits in 30 daysTomas Oliveira Valente Leite de Castro · space held by Uncollapse 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 |
|---|---|---|---|---|---|---|
| 131.143.84.0/22 | 1,024 | UNCOLLAPSE | Uncollapse LLC (UL-362) · US | Direct Allocation | Oct 7, 2025 | abuse@ |
| └ 131.143.87.0/24 | 256 | MEOWNET | Castro Telecom LLC (CTL-383) · US | Reallocated | Oct 9, 2025 | tomas. |
Network & registry
Registry
Holder
- Organization
- Uncollapse LLC
- Handle
- UL-362
- Range
- 131.
143. 84. 0/ 22 - Registration type
- Direct Allocation
- Record created
- Oct 7, 2025
- Reallocated to
- Castro Telecom LLC (CTL-383)
- Reallocated range
- 131.
143. 87. 0/ 24 - Reallocated
- Oct 9, 2025
Origin network
AS200454
PT
- Name
- Tomas Oliveira Valente Leite de Castro
- Type
- Hosting
- Registered
- Dec 19, 2022
- Domain
- leitecastro.com
- Website
- leitecastro.com
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2025
- Current origin since
- Oct 2025 · 1.1 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 131.143.87.0/24 | AS19577 | /24 | ARIN | Another network |
| 131.143.87.0/24 | AS200454 | /24 | ARIN | RPKI valid |
| 131.143.84.0/22 | AS214696 | /22 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 131.
143. 87. 0/ 24 - Netname
- MEOWNET
- Registrant
- Castro Telecom LLC
- Organization
- Castro Telecom LLC (CTL-383)
- Org address
- 530-B HARKLE ROAD STE 100, Santa Fe, NM, 87505
- Org country
- US
- Type
- Reallocated
- Handle
- NET-131-143-87-0-1
- Parent
- NET-131-143-84-0-1
- Created
- Oct 9, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 7, 2025
- Status
- assigned
Report abuse
Abuse contact
- tomas.
leite. castro@ tecnico. ulisboa. pt - Name
- Tomas Oliveira Valente Leite de Castro
- Phone
- +1-202-555-0109
- Handle
- TOVLC-ARIN