Data as of Nov 9, 2026
173.
Anonymizer- Proxy activity
- Not seen in 30 days
- Type
- VPNHosting network
- Risk
- 75 / 100 · HighProxy exits nearby
- Operator
- VPN servicesoperated by IPVanish
- Announced by
- AS54203Strong Technology, LLC.strongtechnology.netHosting
- Announcement
- 173.255.172.0/24RPKI valid
- Location
- Kansas City, Missouri, United StatesAn anonymizer's exit: its user may be anywhere.
Network & registry
The block's full lineage, from registry to use, is on its prefix page.
Announced by
Announcement
- Prefix
- 173.255.172.0/24
- Announced by
- AS54203 Strong Technology, LLC.
- Type
- VPN
- Anonymizer addresses
- all
- Proxy exits
- 112
- Always-on exits
- 66
- RPKI
- RPKI valid
IPv4 market
Holder
- Organization
- Strong Technology, LLC.
- Handle
- STL-172
- Range
- 173.
255. 160. 0/ 19 - Registration type
- Direct Allocation
- Record created
- Nov 14, 2011
Origin network
AS54203
US
- Name
- Strong Technology, LLC.
- Type
- Hosting
- Registered
- Nov 4, 2011
- Domain
- strongtechnology.net
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 63
Routing timeline
Who has announced 173.255.172.0/24
173.255.172.0/24
Routing history
- Pattern
- Stable
- First seen
- Sep 2022
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 173.255.172.0/24 | AS54203 | /24 | ARIN | RPKI valid |
IRR
Route objects on 173.255.172.0/24
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS54203 | ARIN | STL-MCI-NOC | MNT-STL-172 | Dec 11, 2024 |
Whois
Registration for this address
- Range
- 173.
255. 172. 0/ 24 - Netname
- STL-MCI-NOC
- Organization
- Not stated by the registry
- Type
- Reassigned
- Handle
- NET-173-255-172-0-1
- Parent
- NET-173-255-160-0-1
- Created
- Aug 26, 2022
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 14, 2011
- Status
- assigned
Report abuse
Abuse contact
- abuse@
strongtechnology. net - Name
- Abuse
- Phone
- +1-858-712-8055
- Handle
- ABUSE2369-ARIN
Geolocation
Location detail
- Country
- United States
- Region
- Missouri
- City
- Kansas City
- Coordinates
- 39.
0997, -94. 5786 - Time zone
- America/Chicago
- Continent
- North America
- GeoNames
- 4393217