Data as of Nov 8, 2026
129.19.128.0/20
23 residential-proxy exits · 30 daysFort Lewis College · space held by Colorado State University
Announcement
this exact prefix
RPKI valid
Announced by
Type
Business
Recent change
Reallocated Jul 30, 2026
to University Corporation for Atmospheric Research by Colorado State University
Residential-proxy exits
Proxy exits
23
0.56% of its addresses · 30 days
Spread
4 of 16
/24s with at least one exit
Providers
42
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
6.2K observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 129.19.136.0/24 | 0 | 11 | |
| 129.19.142.0/24 | 0 | 6 | |
| 129.19.130.0/24 | 0 | 4 | |
| 129.19.129.0/24 | 0 | 1 |
Proxy providers listing exits
- 9Proxy
- Ake.net
- AnyIP
- BirdProxies
- BottingTools
- BuyingProxy
- ByteProxies
- Byteful
- CliProxy
- ColaProxy
- Datarama
- EnigmaProxy
- Evomi
- FlexyProxies
- FloppyData
- GSocks
- Geonix
- Geonode
- GloryCloud
- GonzoProxy
- IPPeak
- Infatica
- InfiniteProxies
- LemonBright
- LemonLabs
- LemonPrime
- MangoProxy
- NodeProxy
- NovaProxy
- Oxylabs
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyGeo
- ProxyRack
- Proxyma
- RainProxy
- ResiProxies
- Shifter
- Thordata
- VitalExclusive
- WealthProxies
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 129.19.0.0/16 since Oct 2009 | AS14041 | Business | 58 4 always on | Colorado State University |
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 129.19.128.0/24 since Dec 2019 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.129.0/24 since Jul 2018 | AS54393 | Business | 1 | Colorado State University via University Corporation for Atmospheric Research | |
| 129.19.130.0/24 since Jul 2018 | AS54393 | Business | 4 | Colorado State University via University Corporation for Atmospheric Research | |
| 129.19.131.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.132.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.133.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.134.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.135.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.136.0/24 since Dec 2019 | AS54393 | Business | 11 | Colorado State University via University Corporation for Atmospheric Research | |
| 129.19.137.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.138.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.139.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.140.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.141.0/24 since Jul 2018 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research | ||
| 129.19.142.0/24 since Dec 2019 | AS54393 | Business | 6 | Colorado State University via University Corporation for Atmospheric Research | |
| 129.19.143.0/24 since Nov 2025 | AS54393 | Business | Colorado State University via University Corporation for Atmospheric Research |
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 |
|---|---|---|---|---|---|---|
| 129.19.0.0/16 | 65,536 | WESTNET | Colorado State University (CSU-2-Z) · US | Direct Allocation | Jul 8, 1987 | dns. |
| └ 129.19.128.0/18 | 16,384 | FRGP-PARTICIPANT-ASSIGNMENTS-01 | University Corporation for Atmospheric Research (UCAR-1) · US | Reallocated | Jul 30, 2026 | abuse@ |
| └ 129.19.128.0/20 | 4,096 | WESTNET-FORTLEWIS | Fort Lewis College (FLC) · US | Reassigned | Jul 30, 2026 | — |
Network & registry
Registry
Holder
- Organization
- Colorado State University
- Handle
- CSU-2-Z
- Range
- 129.
19. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Jul 8, 1987
- Legacy
- yes
- Reallocated to
- University Corporation for Atmospheric Research (UCAR-1)
- Reallocated range
- 129.
19. 128. 0/ 18 - Reallocated
- Jul 30, 2026
Origin network
AS54393
US
- Name
- Fort Lewis College
- Type
- Education
- Registered
- Feb 7, 2012
- Domain
- fortlewis.edu
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Aug 2008
- Current origin since
- Aug 2025 · 1.3 yr
- Origin networks
- 5
- Last change of origin
- Aug 2025
Recorded history
History
- Handoffs
- 5
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 129.19.128.0/20 | AS54393 | /24 | ARIN | RPKI valid |
| 129.19.128.0/20 | AS6653 | /20 | ARIN | Another network |
| 129.19.0.0/16 | AS14041 | /16 | ARIN | Another network |
IRR
Route objects on the exact prefix
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 129.19.128.0/21 | AS54393 | RADB | Fort Lewis College, Durango, Colorado | MAINT-AS14041 | Nov 13, 2023 |
| 129.19.136.0/21 | AS54393 | RADB | Fort Lewis College, Durango, Colorado | MAINT-AS14041 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 129.
19. 128. 0/ 20 - Netname
- WESTNET-FORTLEWIS
- Registrant
- Fort Lewis College
- Organization
- Fort Lewis College (FLC)
- Org address
- 150A Admin. Bldg, Computer Center, Durango, CO, 81301
- Org country
- US
- Type
- Reassigned
- Handle
- NET-129-19-128-0-2
- Parent
- NET-129-19-128-0-1
- Created
- Jul 30, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 8, 1987
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ucar. edu - Name
- Abuse
- Phone
- +1-307-996-4300
- Handle
- ABUSE18-ARIN