Mainstream Fiber Networks Celebrates Completion of 120 Mile Long Fiber Network

Mainstream Fiber Networks is proud to announce that we have built over 120 miles of fiber optic cable infrastructure through Harrison County. This includes both our mainline project as well as several adjoining neighborhoods that had high participation in our interest survey. Because of this, we are now able to provide our services to approximately 10,000 households in the area, and that number will only continue to grow over the upcoming years. The neighborhoods we are currently serving are listed at the bottom of this page.

Mainstream Fiber is the only 100% fiber optic to the home internet service provider in Harrison County. We do not stop at the pole or take other half measures; we make sure to provide fiber directly to the home, business, or wherever you need it most, Our service starts at 50 mbps download speed and extends all the way up to 1 Gbps. Beyond that, our service is not, and never will be, subject to data caps or throttling.

If you’re interested in getting reliable high speed fiber internet, we may already be available in your neighborhood. Call us at (844) 752 – 6736, check online at, or visit our regional office in Corydon at 2370 Landmark Way to see if you can get signed up today.

If we are not already in your area, please take our survey at and encourage your neighbors to do the same. We rely on demand to expand our network, so the most proactive neighborhoods will be connected first. Not only that, but taking the survey ensures that you will be notified the moment construction of our network begins in your area. Join the many who have already completed this step as we continue to grow and expand throughout Harrison County.

About Mainstream Fiber: Mainstream Fiber is a locally owned and operated internet service provider, headquartered in Nashville, Indiana, dedicated to bringing high speed, reliable, and affordable internet service to the un-served or underserved communities throughout Indiana. Mainstream Fiber operates independently, completing nearly every facet of providing fiber optic services internally, from construction, to network management, to operations and administration.

Connected Zones

135 N

150 W Palmyra

336 and Shiloh Rd SE to 337 and Wiseman Rd SE

62 East

62 West

Bethleham Rd NE

Big Indian Rd

Boxwood Ct

Brunner Hill Rd NW

Charles Davis Rd NW

Corydon Ramsey Rd NW/W Whiskey Run Rd

Corydon Ridge Rd NE

Corydon Ridge to Lanesville

Corydon to New Salisbury

Country Club

Crandall Lanesville Rd NE

Crawford Rd NE

Davis Mill Rd NW

Downtown Corydon

E Hwy 11 SE to Ne Hwy 11 SE

E Old Goshen Rd SE

Fairview Church Rd SW

Flatwood East

Flatwood Rd

Harding Ridge Rd SE


Hwy 62 NW

Lanesville Backbone

Locust Point

Lost Creek Rd NW/Clover Valley Rd NW

Lotticks Corner Rd SE

Martin John Rd SE

Morgans Ln SE

Morgans Ln/Doolittle Hill Rd

Motts Station

N Gethsemane Rd NW

N Hwy 11 SE

New Middleton

New Salisbury to Palmyra

North Rd

Old Heinz Rd NE

Old Hwy 135

Pinaire Ln NW/Glen Aire Rd NW

Raider Dr NE

Ramsey 64

Ring Sec 1

Shiloh Rd SE/SW

Shiloh Rd

Sival Rd NW/Clover Valley Rd NW

Sky Park Dr NE

Smith Hill Rd SE

Southwind Estates

SR 11 to Laconia

SR 337 to SR 11

St Johns Church Rd NE

Town of Elizabeth

Wennings Rd NW/Buffalo Trace Rd NW

Wiseman Rd to Lake Rd