Data as of Nov 8, 2026
204.250.83.0/24
No anonymizer space · no proxy exits in 30 daysMontana Opticom, LLC · space held by Cogent Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 204.250.80.0/21 since May 2013 | AS11924 | Residential | 9 1 always on | Cogent Communications, LLC | |
| 204.248.0.0/14 since May 2024 | AS174 | Internet provider | 52 13 always on | Cogent Communications, 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 |
|---|---|---|---|---|---|---|
| 204.248.0.0/14 | 262,144 | COGENT-204-248-0 | Cogent Communications, LLC (COGC) · US | Direct Allocation | Feb 1, 1995 | abuse@ |
| └ 204.250.80.0/21 | 2,048 | SPRINTLINK | Bridge Band Communications/At (BBC-22) · US | Reassigned | Dec 9, 2002 | — |
Network & registry
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 204.
248. 0. 0/ 14 - Registration type
- Direct Allocation
- Record created
- Feb 1, 1995
- Legacy
- yes
Origin network
AS11924
US
- Name
- Montana Opticom, LLC
- Type
- Internet provider
- Registered
- Mar 6, 2007
- Domain
- mt-opticom.com
- Website
- mt-opticom.com
- Industry
- Internet Service Provider (ISP)
- 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
- Jan 2026 · 9 mo
- Origin networks
- 2
- Last change of origin
- Aug 2017
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 204.
250. 80. 0/ 21 - Netname
- SPRINTLINK
- Registrant
- Bridge Band Communications/At
- Organization
- Bridge Band Communications/At (BBC-22)
- Org address
- 144 Quail Run Road, Bozeman, MT, 59718
- Org country
- US
- Type
- Reassigned
- Handle
- NET-204-250-80-0-1
- Parent
- NET-204-248-0-0-1
- Created
- Dec 9, 2002
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 1, 1995
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN