Data as of Nov 8, 2026
204.228.87.0/24
No anonymizer space · no proxy exits in 30 daysColorado College · space held by Westnet Education and Research Consortium
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 204.228.64.0/18 since May 2005 | AS209 | Residential | 6 |
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 |
|---|---|---|---|---|---|---|
| 204. | 1,792 | WESTNET-10 | Westnet Education and Research Consortium (WERC-4-Z) · US | Direct Allocation | Jan 12, 1995 | werc-arin-abuse@ |
| └ 204.228.84.0/22 | 1,024 | WEST-CC2 | Colorado College (COLORA) · US | Reassigned | May 11, 2023 | z@ |
Network & registry
Registry
Holder
- Organization
- Westnet Education and Research Consortium
- Handle
- WERC-4-Z
- Range
- 204.
228. 82. 0 - 204. 228. 88. 255 - Registration type
- Direct Allocation
- Record created
- Jan 12, 1995
- Legacy
- yes
Origin network
AS17207
US
- Name
- Colorado College
- Type
- Education
- Registered
- Aug 4, 2000
- Domain
- coloradocollege.edu
- Website
- www.coloradocollege.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
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 204.228.84.0/22 | AS17207 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS17207 | RADB | Colorado College | MAINT-AS14041 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 204.
228. 84. 0/ 22 - Netname
- WEST-CC2
- Registrant
- Colorado College
- Organization
- Colorado College (COLORA)
- Org address
- 14 East Cache La Poudre, Colorado Springs, CO, 80903
- Org country
- US
- Type
- Reassigned
- Handle
- NET-204-228-84-0-1
- Parent
- NET-204-228-82-0-1
- Created
- May 11, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 12, 1995
- Status
- assigned
Report abuse
Abuse contact
- werc-arin-abuse@
westnet. net - Name
- Westnet ARIN Abuse
- Phone
- +1-385-355-4287
- Handle
- WAA5-ARIN