Summer 2026 Station Information Profile (SIP) on File with Nielsen
| Call Letter: | KFNS-FM | |
| Frequency: | 100.7 | |
| Station Name: | THE VIPER | |
| Format: | Active Rock | |
| Network(s): | IND | |
| City of License: | TROY/ST CHARLES | |
| County of License: | Lincoln | |
| Mailing Address: | 1000 LAKE ST. LOUIS BLVD 110 LAKE ST. LOUIS, MO 63367 |
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| Phone: | 636-695-2300 | |
| Fax: | 636-625-4138 | |
| URL Address: | viperrocks.com | |
| Broadcasts in HD: |
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| Internet Streams: |
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Summer 2026 Reminder:
You no longer need to submit program information to Nielsen.
To view the simulcast combos that have requested Total Line Reporting, click here .