Coverage · ZIP 21157
Internet Providers in Carrollton, MD (21157)
There are 12 internet providers available in Carrollton, MD (ZIP 21157), including Xfinity Fiber, Antietam Cable, Quantum Internet & Telephone. Compare each provider below by technology, maximum advertised speed, and area coverage, then call (833) 261-0564 for help choosing a plan. Coverage data is sourced from the FCC National Broadband Map.
Internet providers in Carrollton, MD (ZIP 21157)
There are 12 residential internet providers available in Carrollton, MD (ZIP 21157), including Xfinity Fiber, Antietam Cable, Quantum Internet & Telephone. The table below lists each provider with its technology type, maximum advertised speeds, and area coverage, sourced from the FCC National Broadband Map.
| Provider | Technology | Max download | Max upload | Area coverage |
|---|---|---|---|---|
| Xfinity Fiber | Fiber | 10 Gbps | 10 Gbps | 8% |
| Antietam Cable | Fiber | 5 Gbps | 5 Gbps | 6% |
| Quantum Internet & Telephone | Fiber | 2 Gbps | 2 Gbps | 16% |
| Ting | Fiber | 1 Gbps | 1 Gbps | 39% |
| Xfinity | Cable | 2 Gbps | 250 Mbps | 88% |
| Verizon 5G Home | 5G Home Internet | 300 Mbps | 30 Mbps | 71% |
| T-Mobile Home Internet | 5G Home Internet | 100 Mbps | 20 Mbps | 83% |
| AT&T Internet Air | 5G Home Internet | 100 Mbps | 20 Mbps | 74% |
| Quantum Internet & Telephone | Fixed Wireless | 30 Mbps | 10 Mbps | 13% |
| Starlink | Satellite | 280 Mbps | 30 Mbps | 100% |
| Viasat | Satellite | 150 Mbps | 3 Mbps | 100% |
| HughesNet | Satellite | 100 Mbps | 5 Mbps | 100% |
Internet in Carrollton, MD — common questions
How many internet providers are available in Carrollton, MD?
There are 12 internet providers available in Carrollton, MD (ZIP 21157), including Xfinity Fiber, Antietam Cable, Quantum Internet & Telephone. Availability varies by exact address.
What is the fastest internet available in 21157?
Xfinity Fiber offers the highest advertised download speed in Carrollton, MD at up to 10 Gbps. Actual speeds depend on the plan and your address.
How do I check internet availability at my address in Carrollton, MD?
Enter your ZIP code on Ziatan to see every provider serving your block, then call (833) 261-0564 for help comparing plans and pricing — free, with no signup required.