Broadband in 94112 includes a broad mix of cable, fiber, fixed wireless and satellite options. Xfinity has the largest reported wired footprint, while Sonic and AT&T provide important fiber alternatives in parts of the ZIP. Astound, T-Mobile, Verizon and other providers add additional address-dependent options.
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94112 is a comparatively diverse broadband ZIP. Current ZIP-level sources identify Xfinity as the dominant cable network, while Sonic and AT&T provide fiber service in parts of the ZIP. Astound also has a meaningful but smaller reported cable footprint, and fixed-wireless providers create another layer of address-dependent competition.
Current ZIP-level sources report Xfinity cable availability at roughly 100% of 94112, while an FCC-derived secondary dataset reports 99.97%. Those figures indicate a very broad local cable network, but they are coverage estimates rather than guarantees for every apartment or unit.
Sonic reports a wholly owned 10-gigabit fiber network in San Francisco, while current ZIP-level data identifies Sonic fiber in 94112. AT&T separately states that AT&T Fiber is available in parts of San Francisco. The important distinction is that neither citywide nor ZIP-level coverage proves fiber reaches every 94112 property.
Astound Broadband appears in 94112 cable data with a smaller footprint than Xfinity. T-Mobile and Verizon are also reported in the ZIP through fixed-wireless or 5G services. Their address-level eligibility can change with local capacity and wireless conditions.
The table distinguishes provider and network evidence from address-level serviceability. ZIP-level percentages below are reported by secondary broadband datasets and should be treated as coverage indicators rather than live ordering results.
| Provider | Technology | 94112 evidence | Advertised maximum | What to verify |
|---|---|---|---|---|
|
Xfinity
Broad ZIP footprint
|
Cable | Current ZIP-level sources report approximately 100% cable coverage in 94112, including 99.97% in one FCC-derived dataset. | Up to 2 Gbps in current reported offerings | Exact address, available tier, upload speed and equipment terms |
|
Sonic
Fiber ZIP presence
|
Fiber | Current ZIP-level provider data reports Sonic fiber availability in approximately 65% of 94112. Sonic also operates a wholly owned fiber network in San Francisco. | Up to 10 Gbps | Exact address, construction status and current plan |
|
AT&T Fiber
Partial SF footprint
|
Fiber | AT&T states that fiber is available in parts of San Francisco. Current ZIP-level secondary data reports AT&T service in 94112, including fiber/IPBB categories. | Up to 5 Gbps where available | Whether the specific 94112 address is fiber-served |
|
Astound Broadband
Smaller wired footprint
|
Cable | FCC-derived secondary data reports Astound cable service at about 61% of 94112 in one coverage dataset; another current ZIP provider source reports a smaller approximately 39.5% footprint. | Up to 1.5 Gbps in reported 94112 data | Whether the exact building falls within Astound's network |
|
T-Mobile Home Internet
5G / fixed wireless
|
5G fixed wireless | Current ZIP-level provider data reports T-Mobile 5G home internet availability in the 94112 market. Wireless eligibility varies by service address and network capacity. | Up to about 498 Mbps in current ZIP-level reporting | Address eligibility, signal and available capacity |
|
Verizon 5G Home Internet
Limited wireless footprint
|
Fixed wireless | Current ZIP-level sources identify Verizon 5G internet service in the 94112 market, but the reported footprint is substantially smaller than Xfinity's wired coverage. | Plan and location dependent | Exact address and current 5G Home Internet eligibility |
|
Other fixed-wireless providers
Limited local footprints
|
Fixed wireless | ZIP-level sources also identify providers such as XNET, Unwired and Etheric Networks in the broader 94112 market, with varying reported coverage. | Provider and location dependent | Exact address, line-of-sight and network footprint |
|
Satellite providers
Broad geographic option
|
Satellite | Satellite services such as Starlink and HughesNet are geographically available across the ZIP and do not depend on neighborhood cable or fiber plant in the same way as wired providers. | Provider and plan dependent | Equipment location, clear sky view, latency and plan terms |
The provider descriptions below emphasize evidence tied to 94112 or San Francisco rather than treating citywide availability as uniform throughout the ZIP.
Xfinity is the most broadly reported wired internet provider in 94112. One FCC-derived secondary dataset reports cable availability at 99.97% of the ZIP, while current provider comparison data rounds the reported Xfinity footprint to approximately 100%. This makes Xfinity a central part of the 94112 broadband market, but the coverage figure still does not replace an address check.
Sonic is one of the most important fiber alternatives to cable in 94112. Sonic states that its San Francisco network is a wholly owned 10-gigabit fiber network. Current ZIP-level provider data reports Sonic fiber availability in roughly 65% of 94112, making the ZIP one where an address-level fiber check can materially change the provider comparison.
AT&T is another significant fiber provider in San Francisco. Its current San Francisco fiber page explicitly says AT&T Fiber is available in parts of the city and directs residents to an address-level availability check. Current ZIP-level secondary data also reports AT&T service in 94112, although the ZIP data combines multiple AT&T technologies.
Astound Broadband is a meaningful secondary wired provider in 94112. Coverage sources disagree on the precise percentage because their data vintages and methodologies differ: one FCC-derived source reports about 61% cable availability, while another current ZIP provider source reports about 39.5%. The consistent finding is that Astound has a substantial but smaller footprint than Xfinity.
T-Mobile provides a wireless alternative to the wired networks in 94112. Current ZIP-level provider data reports T-Mobile 5G internet availability in the market, but fixed-wireless service behaves differently from cable and fiber: eligibility depends on the address, local network capacity and wireless conditions.
Verizon offers 5G Home Internet in San Francisco, but current ZIP-level data indicates a much smaller reported footprint in 94112 than Xfinity, Sonic or the broader wired networks. Verizon's own San Francisco page confirms that 5G Home Internet is offered in the city and states that availability varies by location.
The useful speed tier depends on household activity, but the network technology matters too. In 94112, comparing a cable plan with Sonic or AT&T fiber requires looking beyond the advertised download number because upload capacity and network architecture can differ substantially.
Suitable for ordinary browsing, video calls, streaming and smaller households when the connection is stable.
Useful for households with several simultaneous users, multiple streaming devices and heavier downloads.
More relevant for larger households, substantial downloads or homes with many simultaneously active devices.
Available only where Sonic or AT&T fiber reaches the property and the home networking equipment can use the additional capacity.
The ZIP's provider mix includes a large cable network, multiple fiber networks, fixed wireless and satellite. Those technologies do not have identical coverage patterns inside the ZIP.
Sonic and AT&T are the important fiber providers to investigate in 94112. Sonic reports a San Francisco 10-Gigabit fiber network, while AT&T confirms fiber availability in parts of the city. Address-level checks are necessary because neither network covers every property.
Xfinity is the dominant reported cable network in 94112, with Astound providing a smaller overlapping footprint. Cable is therefore the most broadly documented wired technology in the ZIP.
T-Mobile and Verizon provide wireless home-internet alternatives. Their networks do not require the same type of wired drop to each building, but eligibility depends on local capacity and signal conditions.
Satellite services such as Starlink and HughesNet remain geographically available across 94112. They are structurally different from the neighborhood wired networks and can be considered where wired service is unavailable or unsuitable.
94112 covers a large section of southern San Francisco and includes Oceanview, Merced Heights, Ingleside, Excelsior and Outer Mission areas. The ZIP therefore crosses several distinct residential environments rather than representing one uniform neighborhood network.
San Francisco's official ZIP/neighborhood mapping identifies 94112 with Oceanview, Merced, Ingleside, Excelsior and Outer Mission areas. That geographic spread matters for broadband research because network deployment follows streets, buildings and infrastructure rather than the ZIP boundary itself.
An FCC-data-based secondary source reports Xfinity cable coverage at 99.97% of 94112, while another current ZIP provider source rounds the coverage to approximately 100%. The two figures should not be treated as separate competing facts; together they show that Xfinity's cable plant is the most broadly reported wired network in the ZIP.
Current ZIP-level data reports Sonic fiber availability at about 64.6%, while AT&T is also reported in 94112 and confirms that fiber is available in parts of San Francisco. This creates streets and buildings where residents can compare fiber against cable, but the ZIP-level figures do not establish that both fiber networks reach every address.
Astound is not simply a duplicate entry in a provider directory. FCC-derived coverage data reports a substantial Astound cable footprint in 94112, although estimates vary by dataset. Where Astound overlaps Xfinity, residents may have another cable-network option; where it does not, the broader ZIP provider list can overstate the choices available at a particular building.
Much of 94112 is established San Francisco residential development, including dense blocks of houses, apartments and other multifamily properties. For these properties, the network reaching the street is only part of the question: building wiring, unit configuration and landlord or property arrangements can affect which services can actually be installed.
These findings explain what the available ZIP-level evidence actually establishes instead of treating provider-directory percentages as address-level availability.
| Finding | Evidence | What it means for a 94112 address |
|---|---|---|
| Xfinity cable | FCC-derived secondary data reports 99.97% cable coverage; current ZIP data reports approximately 100% | Xfinity should be checked as a primary wired option at most 94112 properties. |
| Sonic fiber | Current ZIP data reports about 64.6% availability; Sonic describes a wholly owned 10-Gigabit San Francisco fiber network | A significant portion of the ZIP may have a fiber alternative to cable, but address verification is essential. |
| AT&T Fiber | AT&T confirms fiber in parts of San Francisco; current ZIP-level data reports AT&T service in 94112 | AT&T should be checked independently rather than assuming Sonic is the only fiber option. |
| Astound Broadband | FCC-derived data reports a substantial cable footprint, while another current source reports about 39.5% | Astound may provide a second wired option for some properties, but its footprint is not universal. |
| T-Mobile 5G | Current ZIP provider data reports T-Mobile 5G internet in the 94112 market | Wireless service is worth checking separately, especially where wired alternatives are limited. |
| Verizon 5G | Current ZIP provider data reports a limited Verizon 5G footprint; Verizon confirms 5G Home Internet in San Francisco | Verizon is a property-specific alternative rather than a ZIP-wide assumption. |
Broadband infrastructure in San Francisco follows streets, buildings, utility routes and network construction rather than postal boundaries. The neighborhoods below are geographic reference points for understanding the ZIP, not guarantees of provider availability.
Neighboring ZIP codes can have different network footprints. Use them as separate research areas instead of assuming their provider mix is identical to 94112.
The useful sequence is to identify the local network options first and then verify each provider against the exact street address and unit.
FCC-derived and other ZIP-level datasets are useful for understanding the provider landscape in 94112. They can show that a network reports service somewhere in the ZIP without establishing that the network reaches a particular house, apartment building or unit. Provider address checkers should therefore take precedence for final verification.
The provider mix in 94112 makes it useful to compare the physical network reaching the property before focusing on the highest advertised download speed.
Sonic and AT&T fiber can offer substantially higher upload capacity than traditional cable service. That difference can matter for cloud backups, large file transfers, remote work and other upload-heavy use.
A 94112 address may have Xfinity plus Sonic, AT&T or Astound, but ZIP-level coverage figures cannot determine which combination reaches the property. Checking each provider separately can reveal differences that a ZIP-wide list hides.
For apartments, condos and other multifamily properties, ask which providers actually serve the building and whether the unit's internal wiring supports the advertised service. Street-level network presence does not by itself establish unit-level availability.
ZIP-level research identifies the local market. Provider address tools determine what can actually be ordered at the property.
This page gives greater weight to official provider information for current network and service-area claims, while using ZIP-level broadband datasets as a secondary coverage layer.
Answers below distinguish ZIP-level evidence from what can actually be established for an individual San Francisco address.