Data as of Nov 7, 2026
199.21.176.0/22
4 residential-proxy exits · 30 daysPremium Choice Broadband · space held by Cornerstone Communications, LLC
Residential-proxy exits
Proxy exits
4
0.39% of its addresses · 30 days
Spread
2 of 4
/24s with at least one exit
Providers
17
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
17 observations
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 199.21.178.0/24 | 0 | 3 | |
| 199.21.177.0/24 | 0 | 1 |
Proxy providers listing exits
- BottingTools
- Bright Data
- ByteProxies
- Byteful
- CatProxies
- ColaProxy
- Geonode
- GloryCloud
- IPRoyal
- InfiniteProxies
- LemonBright
- NextProxy
- ProxyEmpire
- ProxyRack
- Thordata
- VitalExclusive
- WealthProxies
Network & registry
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 this prefix
Summary
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
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