Data as of Nov 7, 2026
199.21.177.0/24
1 residential-proxy exit · 30 daysPremium Choice Broadband · space held by Cornerstone Communications, LLC
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
3
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
3 observations
Proxy providers listing exits
- Bright Data
- LemonBright
- VitalExclusive
Network & registry
Announced by
Covering announcement 199.21.176.0/22
- Prefix
- 199.21.176.0/22
- Announced by
- AS398576 Premium Choice Broadband
- Type
- Residential
- Proxy exits
- 4
- RPKI
- RPKI valid
- Netname
- CCMAINE-BLK-3
- Registrant
- Cornerstone Communications, LLC
- RIR
- ARIN
Origin network
AS398576
US
- Name
- Premium Choice Broadband
- Type
- Internet provider
- Registered
- Jul 14, 2020
- Domain
- premiumchoicebroadband.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 199.21.176.0/22
199.21.176.0/22
Routing history
- Pattern
- Rotating
- First seen
- Aug 2010
- Current origin since
- Feb 2026 · 8 mo
- Origin networks
- 2
- Last change of origin
- Feb 2026
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 199.21.176.0/22 | AS46188 | /22 | ARIN | Another network |
| 199.21.176.0/22 | AS398576 | /22 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 199.
21. 176. 0/ 22 - Netname
- CCMAINE-BLK-3
- Registrant
- Cornerstone Communications, LLC
- Organization
- Cornerstone Communications, LLC (CCL-216)
- Org address
- 125 School Road, Charleston, ME, 04422
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-199-21-176-0-1
- Parent
- NET-199-0-0-0-0
- Created
- Aug 12, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 12, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
ccmaine. net - Name
- Abuse
- Phone
- +1-207-285-1234
- Handle
- ABUSE1865-ARIN