Internet provider · IN · Fiber
Mainstream Fiber
Indiana rural fiber, $121.9M BEAD-funded. Building out south-central IN where Comcast and AT&T don't.
- Parent company
- Mainstream (private)
- Founded
- 2016
- Headquarters
- Indianapolis, IN
- Service types
- Fiber
- States served
- 1 state: IN
- ZIPs covered
- ~65
- Residential subs
- ~19,000 (2026-Q1)
- Gateway fee
- Included
- Install fee
- Free
- Contract
- None
Plans & pricing
| Tier | Down | Up | Price | Data cap |
|---|---|---|---|---|
| 200 Mbps | 200 Mbps | 200 Mbps | $55/mo | Unlimited |
| 1 Gig | 1 Gbps | 1 Gbps | $75/mo | Unlimited |
| 2 Gig | 2 Gbps | 2 Gbps | $100/mo | Unlimited |
Notes: $121.9M Indiana BEAD. Rural Indiana fiber build, 2025-2027.
Cities + markets served
- Bloomington IN
- Bedford IN
- Monroe County IN
- Lawrence/Owen/Greene counties
Ownership & corporate history
Ownership type: private (since 2016)
Indiana rural fiber.
Customer service & support
- Customer service
- 1-844-872-6900
- Technical support
- 1-844-872-6900
- Billing
- 1-844-872-6900
- Support portal
- https://www.mainstreamfiber.com/support
- Billing portal
- https://www.mainstreamfiber.com/myaccount
- Mailing address
- Mainstream Fiber, 1255 W 17th St, Bloomington, IN 47404
Returning your equipment
Accepted return methods: mainstream-office · ups-store-prepaid-label
You must return: Router/ONT
Common mistake: Bloomington IN office.
Where you can actually go in person
Confirmed company-operated stores that can sign up service AND accept equipment returns. Authorized-retailer addresses are tagged separately because they cannot always handle returns.
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Mainstream Fiber HQ Corporate-operated
1255 W 17th St, Bloomington, IN 47404
Accepts equipment: Router/ONT
Can sign up for: Mainstream sign-up, Bill pay
Branded as: Mainstream Fiber (corporate)
South-central IN HQ.
BEAD & broadband grants
- IN: $121,900,000 · awarded 2024-10 · source
Does Mainstream Fiber serve your address?
Use our ZIP-coverage tool to confirm availability — we cross-reference live FCC Form 477 data with the carrier's own footprint map.
Check coverage at my ZIP →Sources & verification
Last verified 2026-06-06. Records over 180 days old are auto-flagged for re-verification.