Data as of Nov 7, 2026
172.81.106.0/24
No anonymizer space · no proxy exits in 30 daysPrime Security Corp.
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 172.81.96.0/20 | 4,096 | PSC-594 | Prime Security Corp. (PSC-594) · US | Direct Allocation | Sep 5, 2023 | abuse@ |
| └ 172.81.104.0/21 | 2,048 | CTCSCI | Ctcsci Tech Limited (C10193922) · HK | Reassigned | Sep 25, 2023 | abuse@ via PSC-594 |
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
Announced by
Covering announcement 172.81.106.0/23
- Prefix
- 172.81.106.0/23
- Announced by
- AS400618 Prime Security Corp.
- Type
- Unknown
- RPKI
- RPKI valid
- Netname
- CTCSCI
- Registrant
- Ctcsci Tech Limited
- RIR
- ARIN
Registry
Holder
- Organization
- Prime Security Corp.
- Handle
- PSC-594
- Range
- 172.
81. 96. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Sep 5, 2023
Origin network
AS400618
US
- Name
- Prime Security Corp.
- Registered
- Apr 11, 2022
- Domain
- primesecuritycorp.com
- Website
- primesecuritycorp.com
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 172.81.106.0/23
172.81.106.0/23
Routing history
- Pattern
- Stable
- First seen
- Oct 2025
- Current origin since
- Oct 2025 · 1.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 172.81.104.0/21 | AS140042 | /24 | ARIN | Another network |
| 172.81.104.0/21 | AS151797 | /24 | ARIN | Another network |
| 172.81.96.0/20 | AS153517 | /24 | ARIN | Another network |
| 172.81.96.0/20 | AS400618 | /24 | ARIN | RPKI valid |
| 172.81.96.0/20 | AS8796 | /20 | ARIN | Another network |
| 172.81.96.0/20 | AS140227 | /20 | ARIN | Another network |
| 172.81.96.0/20 | AS395886 | /20 | ARIN | Another network |
IRR
Route objects on 172.81.106.0/23
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS400618 | RADB | Customper Prefix | MAINT-AS400618 | Nov 3, 2025 |
Whois
Registration for this announcement
- Range
- 172.
81. 104. 0/ 21 - Netname
- CTCSCI
- Registrant
- Ctcsci Tech Limited
- Organization
- Ctcsci Tech Limited (C10193922)
- Type
- Reassigned
- Handle
- NET-172-81-104-0-1
- Parent
- NET-172-81-96-0-1
- Created
- Sep 25, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 5, 2023
- Status
- assigned
Report abuse
Abuse contact
- abuse@
primesecuritycorp. com - Name
- Abuse
- Phone
- +1-326-266-6888
- Handle
- ABUSE8852-ARIN