Internet provider · 5-STATE · Fiber · Fixed Wireless
Mammoth Networks
Northern Rockies 5-state fiber + WISP. Built where no incumbent would.
- Parent company
- Mammoth (private)
- Founded
- 2001
- Headquarters
- Gillette, WY
- Service types
- Fiber · Fixed Wireless
- States served
- 5 states: CO, MT, ND, SD, WY
- ZIPs covered
- ~95
- Residential subs
- ~28,000 (2026-Q1)
- Gateway fee
- Included
- Install fee
- Free
- Contract
- None
Plans & pricing
| Tier | Down | Up | Price | Data cap |
|---|---|---|---|---|
| 300 Mbps | 300 Mbps | 300 Mbps | $60/mo | Unlimited |
| 1 Gig | 1 Gbps | 1 Gbps | $95/mo | Unlimited |
Notes: Northern Rockies multi-state fiber + WISP.
Coverage detail
- WY (largest)
- MT
- SD
- ND
- NE CO
Ownership & corporate history
Ownership type: see-record
See main carrier record.
Customer service & support
- Customer service
- (see website)
- Technical support
- (see website)
- Billing
- (see website)
- Support portal
- https://www.mammothnetworks.com/support
- Billing portal
- https://www.mammothnetworks.com/
Returning your equipment
Accepted return methods: mail-to-carrier-hq · ups-store-prepaid-label
You must return: Carrier-rented gateway/router/ONT, Set-top boxes (if any), Remotes
Common mistake: Call the carrier first to get a prepaid label, then drop at any UPS Store with the label. Keep the tracking receipt.
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.
-
Any UPS Store nationally — Mammoth Networks prepaid label UPS Store partner
Any UPS Store, (nationwide), — —
Accepts equipment: Carrier-rented equipment
Branded as: The UPS Store (independent franchise)
Bring the carrier-issued prepaid label.
Does Mammoth Networks 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.