Data as of Nov 5, 2026
208.83.40.128/26
No anonymizer space · no proxy exits in 30 daysMontana Opticom, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 208.83.40.0/21 since Oct 2007 | AS11924 | Residential | 4 | Montana Opticom, LLC |
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 |
|---|---|---|---|---|---|---|
| 208.83.40.0/21 | 2,048 | MONTANA-OPTICOM | Montana Opticom, LLC (MONTA-16) · US | Direct Allocation | Oct 2, 2007 | support@ |
| └ 208.83.40.128/26 | 64 | NET-ASCENTDATA | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 208.83.40.0/24
- Prefix
- 208.83.40.0/24
- Announced by
- AS11924 Montana Opticom, LLC
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- MONTANA-OPTICOM
- Registrant
- Montana Opticom, LLC
- RIR
- ARIN
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
208.83.40.0/24
Routing history
- Pattern
- Stable
- First seen
- Jun 2013
- Current origin since
- Jun 2013 · 13 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 208.83.40.0/21 | AS11924 | /24 | ARIN | RPKI valid |
IRR
Route objects on 208.83.40.0/24
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS11924 | ARIN | 208.83.40.0/24 | MNT-MONTA-16 | Nov 8, 2023 |
Whois
Registration for this announcement
- Range
- 208.
83. 40. 0/ 21 - Netname
- MONTANA-OPTICOM
- Registrant
- Montana Opticom, LLC
- Organization
- Montana Opticom, LLC (MONTA-16)
- Org address
- 144 Quail Run Road, Bozeman, MT, 59718
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-208-83-40-0-1
- Parent
- NET-208-0-0-0-0
- Created
- Oct 2, 2007
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 2, 2007
- Status
- assigned
Report abuse
Abuse contact
- support@
mt-opticom. com - Name
- MT-Opticom Abuse
- Phone
- +1-406-999-5000
- Handle
- MTOPT2-ARIN