Data as of Nov 9, 2026
208.21.37.0/24
1 residential-proxy exit · 30 daysBlueCross BlueShield of Tennessee · space held by Cogent Communications, LLC
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
2
selling exits here
Oct 10, 2026 – Nov 8, 2026
Exits seen per day
12 observations
Proxy providers listing exits
- GloryCloud
- YumiProxy
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 208.0.0.0/11 | AS174 | Internet provider | 610 182 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 |
|---|---|---|---|---|---|---|
| 208. | 2,359,296 | COGC | Cogent Communications, LLC (COGC) · US | Direct Allocation | Mar 13, 1996 | abuse@ |
| └ 208.21.37.0/24 | 256 | SPRINT-D01525 | Blue Cross Blue Shield (BCBS) · US | Reassigned | Apr 10, 1997 | — |
Network & registry
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 208.
0. 0. 0 - 208. 35. 255. 255 - Registration type
- Direct Allocation
- Record created
- Mar 13, 1996
- Legacy
- yes
Origin network
AS54174
US
- Name
- BlueCross BlueShield of Tennessee
- Type
- Business
- Registered
- Oct 27, 2011
- Domain
- bcbst.com
- Industry
- Insurance Carriers and Agencies
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2012
- Current origin since
- Nov 2012 · 14 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS54174 | RADB | Akamai Technologies, Inc | MAINT-AS32787 | Sep 25, 2024 |
Whois
Registration for this announcement
- Range
- 208.
21. 37. 0/ 24 - Netname
- SPRINT-D01525
- Registrant
- Blue Cross Blue Shield
- Organization
- Blue Cross Blue Shield (BCBS)
- Org address
- 801 Pine Street, Chattanooga, TN, 37402
- Org country
- US
- Type
- Reassigned
- Handle
- NET-208-21-37-0-1
- Parent
- NET-208-0-0-0-1
- Created
- Apr 10, 1997
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 13, 1996
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN