Foss SecurityNetwork cabling company in Sioux Falls, SD
Foss Security is a network cabling company at 623 S Lyons Ave Ste 300, Sioux Falls, SD 57106, ranked #1 of 11 network cabling and installation companies in Sioux Falls and rated 5.0 from 66 Google reviews. Open Monday to Friday.
Facts here come from public sources and the firm itself. Confirm certifications, insurance and contract terms with the firm before you sign.
Sioux Falls, SDUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 623 S Lyons Ave Ste 300, Sioux Falls, SD 57106Get directions |
|---|---|
| Phone | (605) 339-0575 |
| Website | fosssecurity.com |
| Hours | Monday to Thursday: 8 AM – 5 PM; Friday: 8 AM – 3 PM |
| Google rating | 5.0 from 66 Google reviews |
Services
Each service shows the evidence we matched it on.
- Network Cablingmain serviceadditional Google category
- Business Phone Systemsadditional Google category
Service area
Based in Sioux Falls, SDView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 8 AM – 5 PM |
| Tuesday | 8 AM – 5 PM |
| Wednesday | 8 AM – 5 PM |
| Thursday | 8 AM – 5 PM |
| Friday | 8 AM – 3 PM |
| Saturday | Closed |
| Sunday | Closed |
- Open evenings — no
- Open Saturdays — no
- Open Sundays — no
Questions about Foss Security
How is Foss Security ranked in Sioux Falls?
Foss Security is ranked #1 of 11 network cabling and installation companies in Sioux Falls by IFR Score, with 58 out of 100 as of November 2026. The score weighs reputation, review volume, recency, availability, service focus, proximity, claimed profile, partnered and client reviews. No business can pay to change its rank.
What are Foss Security’s hours?
Foss Security is open Monday to Friday. Its listed hours are Monday to Thursday, 8 AM – 5 PM; Friday, 8 AM – 3 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What do Google reviews say about Foss Security?
Foss Security has a rating of 5.0 from 66 Google reviews. The IFR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact Foss Security?
Call Foss Security on (605) 339-0575. The business is at 623 S Lyons Ave Ste 300, Sioux Falls, SD 57106. Its website is linked in the key facts on this page. Ask for a written scope and quote before any work starts.
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Claiming is free. Correct your hours, services and service area. The IFR Score is recalculated from corrected data; payment never changes it.
Compare nearby network cabling and installation companies
| Business | Rank | IFR Score | Google rating | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|
| Foss Security (this business) | — | 58 | 5.0 (66) | No | No | |
| Advanced Tech inc | #2 | 56 | 4.9 (35) | Yes | No | 2.4 mi |
| Sidewalk Technologies | #3 | 53 | 5.0 (24) | No | No | 7.2 mi |
See all 11 ranked network cabling and installation companies in Sioux Falls