Cambridge, Massachusetts Internet Outage Today
Live Cambridge internet outage reports and how households here get online.
Weather data by Open-Meteo.com
No internet outage reports in Cambridge, Massachusetts in the last 24 hours
Internet access in Cambridge
Only 8.9% of Cambridge homes can get fiber; most wired service here runs over cable or DSL.
6 home internet providers reach at least 5% of the city's 57,293 homes. Satellite service is excluded. Source: FCC National Broadband Map, December 2025 data.
- Broadband subscription: 94.8% of 49,444 households (Massachusetts 92.8%, US 91%). Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Fiber to the home: available at 8.9% of 57,293 homes (US 55.9%). Gigabit plans: 78.5%. Cable: 99.3%.
- Home internet providers filing coverage here: Xfinity (100% of homes), AT&T (63% of homes), Starry (55% of homes), Netafy, Inc. (23% of homes). 5G home or mobile coverage: 100% of the city area. Source: FCC National Broadband Map, Dec 2025 data
- Rank: highest of 4 Massachusetts cities we track (lowest: Lowell, 87.4%).
- Cable, fiber or DSL: 86.4%. Cellular data only: 6.7% (US 11.5%). Wired lines are more common here than nationally.
- No internet subscription: 5.2%. No computer or smartphone: 1.5%. Source: US Census Bureau, ACS 2020–2024 (table S2801)
- Grid reliability, 2024: Eversource customers averaged 81 minutes without power. Source: EIA Form 861, 2024 reliability data
- Middlesex County storm record since 2015: 530 reports; power outages named in 9 episodes. Source: NOAA Storm Events Database
Source: Census ACS 2020–2024.
Source: FCC National Broadband Map, December 2025 data.
Cambridge is 1st of 6 nearby cities on this measure. Source: Census ACS 2020–2024.
| City | Widest wired provider | Fiber | Gigabit plans | No internet subscription |
|---|---|---|---|---|
| Cambridge, MA | Xfinity (100%) | 8.9% | 78.5% | 5.2% |
| Boston, MA | Xfinity (100%) | 70.2% | 76.2% | 7.9% |
| Lowell, MA | Xfinity (99%) | 54.7% | 94.6% | 12.6% |
| Nashua, NH | Xfinity (100%) | 60.5% | 98.2% | 6.6% |
| Worcester, MA | Spectrum (96%) | 28.1% | 6.8% | 8.8% |
Source: FCC National Broadband Map, December 2025 data; Census ACS 2020–2024.
Checked September 2026.
Internet providers in Cambridge
Share of Cambridge homes each provider reported it can serve, in FCC filings for December 2025: Xfinity (100%), T-Mobile Home Internet (88%), Verizon (65%), AT&T (63%), and Starry (55%). Check your own address on the FCC National Broadband Map. If the lights are out too, see Cambridge power outages.
Router checks: internet outage guide. Nationwide: US internet outages.
Who to check first in Cambridge
The providers with the widest reported coverage in Cambridge. Start with the one on your bill.
Xfinity in Cambridge
Reach: reports service to 100% of Cambridge homes. Network: Cable (with fiber in some areas), run by Comcast.
Where to check: Sign in to the Xfinity app or the Status Center on xfinity.com to see outages reported for your address.
Support: 800-934-6489
AT&T in Cambridge
Reach: reports service to 63% of Cambridge homes. Network: Fiber, DSL/IPBB and AT&T Internet Air (fixed wireless), run by AT&T.
Where to check: Use AT&T's outage check in the Smart Home Manager app or on att.com after signing in.
Support: 800-288-2020
Backup internet options in Cambridge
Xfinity (100% of homes) and AT&T (63%) each report service to more than half of Cambridge homes. At an address that can get both, they run on separate lines.
Home 5G and fixed-wireless plans from T-Mobile Home Internet (88%) and Verizon (65%) report coverage of Cambridge homes (Verizon’s figure combines Fios fiber and 5G Home). They run over cell towers rather than cable or fiber, so they can work when a wired network is down. Cell coverage by area is 100% for 4G LTE and 100% for 5G.
About 6.7% of Cambridge households, roughly 3,300 homes, get online only through a cell plan. For them a mobile outage is an internet outage.
Power and weather behind internet outages in Cambridge
Eversource customers averaged 81 minutes without power in 2024, across 0.69 interruptions each, against 102 minutes for Massachusetts as a whole. Cable nodes and fiber cabinets run on batteries that last hours, not days, so a long power cut can take internet down even for homes whose own power has returned. See Cambridge power outages when both go out together.
Middlesex County logged 530 storm reports since 2015, most often thunderstorm wind, flood, and hail. Reports peak in July. Power outages were named in 9 of those storm episodes. Wind, ice and flooding damage poles and buried lines, which is how a storm turns into an internet outage as well as a power outage.
Fiber reports reach 8.9% of Cambridge homes, cable 99.3% and copper lines 0%. Cable is the main wired technology here. One neighborhood node feeds many homes, so a node fault usually shows up as a whole street offline at once.
Cambridge internet outage questions
Does a cell network outage take down home internet in Cambridge?
For the 6.7% of Cambridge households that rely only on a mobile data plan, yes. The 86.4% with cable, fiber or DSL are not affected.
What can I use for internet in Cambridge when my provider is down?
A phone hotspot: 4G LTE covers 100% of Cambridge by area and 5G 100%. Home 5G plans: T-Mobile Home Internet (88%) and Verizon (65%). Where both Xfinity and AT&T are available, the second wired line is a backup.
Can a power outage take internet down in Cambridge?
Yes, a long power cut can. Eversource customers averaged 81 minutes without power in 2024. NOAA records name power outages in 9 storm episodes in Middlesex County since 2015.
Is fiber or gigabit internet available in Cambridge?
Fiber is reported at 8.9% of Cambridge homes (US 55.9%, Massachusetts 50.1%), and plans of 1 Gbps or faster at 78.5% (US 69.2%).
How many Cambridge households have no home internet?
About 2,600 of 49,444 households, or 5.2%, have no internet subscription of any kind, and another 6.7% rely only on a cell plan (Census ACS 2020–2024).
Which internet provider covers the most homes in Cambridge?
Xfinity, at 100% of homes in its FCC filing. Fiber reaches 8.9% of Cambridge homes and gigabit plans 78.5%.
ISP outage status for Cambridge
More outage pages for Cambridge and nearby
Other outage types in Cambridge
Internet Outages in cities near Cambridge
- Boston, MA 3 mi
- Lowell, MA 21 mi
- Nashua, NH 33 mi
- Worcester, MA 36 mi
- Derry, NH 37 mi
- Pawtucket, RI 37 mi
Report counts are user-submitted; other figures name their official source. How our data works
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