Broadband in 78223 is more varied than a simple cable-versus-fiber comparison suggests. Current ZIP-level records identify a large AT&T fiber footprint, established Spectrum service, fixed-wireless networks, 5G home internet and smaller fiber deployments. This guide focuses on what the available evidence actually establishes for southeast and east-side San Antonio.
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78223 has a broad technology mix. The most important finding is that the ZIP contains substantial wired competition while also having meaningful fixed-wireless coverage and smaller property-specific fiber deployments.
Current FCC-derived secondary data identifies AT&T fiber across a substantial share of 78223, with the January 2026 provider report listing fiber as the dominant AT&T technology in the ZIP and a maximum advertised speed of 5 Gbps. AT&T's own San Antonio page confirms fiber service in many San Antonio neighborhoods but requires an address check for the final result.
Spectrum operates a store at 3151 SE Military Dr, Suite 101, San Antonio, TX 78223. Spectrum's San Antonio service information also identifies residential Internet service in the city. The local store is evidence of an operating presence inside the ZIP; it is not, by itself, proof that every 78223 home is serviceable.
ZIP-level datasets identify T-Mobile, Verizon, Alamo Broadband, VTX, ZipLink and other fixed-wireless providers in 78223. T-Mobile also has multiple stores inside the ZIP that explicitly list Home Internet, providing direct local evidence for the service category.
The table separates directly documented local evidence from ZIP-level broadband datasets. Coverage percentages come from third-party datasets derived from FCC broadband records and should be treated as research indicators rather than live ordering results.
| Provider | Technology | 78223 evidence | Advertised maximum | What to verify |
|---|---|---|---|---|
|
AT&T Fiber
Major ZIP footprint
|
Fiber | January 2026 FCC-derived reporting identifies AT&T fiber as a major wired technology in 78223. A separate ZIP dataset reports roughly 87% fiber availability for AT&T/EarthLink-branded service. | Up to 5 Gbps where available | Exact address, fiber tier, installation and current plan |
|
Spectrum
Local ZIP presence
|
Cable; limited fiber | Spectrum operates a store at 3151 SE Military Dr, Suite 101, San Antonio, TX 78223. ZIP-level datasets also report extensive Spectrum cable coverage and a smaller fiber footprint. | Up to 2 Gbps in select markets | Address, technology, upload tier and current plan |
|
Google Fiber
Secondary ZIP evidence
|
Fiber | Commercial ZIP-level datasets list Google Fiber in 78223, while Google's current Texas information confirms San Antonio service and identifies the East Side as a San Antonio service area. The public provider page does not establish ZIP-wide eligibility. | Up to 8 Gbps where available | Exact address and current Google Fiber build status |
|
T-Mobile 5G Home Internet
Direct ZIP evidence
|
5G fixed wireless | T-Mobile operates locations at 4130 S New Braunfels Ave and 3207 SE Military Dr in 78223, both of which list T-Mobile Home Internet and an availability check. | Typical speeds vary by plan and network conditions | Address eligibility, capacity and signal conditions |
|
Verizon 5G Home Internet
ZIP-level evidence
|
Fixed wireless | ZIP-level broadband datasets identify Verizon fixed wireless service in 78223. The reported footprint differs considerably between datasets and data vintages, so the figure should be treated as an indicator rather than a live guarantee. | Location-dependent; current plans vary | Exact address and current 5G Home eligibility |
|
Hotwire Communications
Limited fiber footprint
|
Fiber | FCC-derived secondary data identifies a small Hotwire fiber footprint in 78223, roughly 3% in one ZIP-level dataset. The same data identifies portions of southeast and south 78223 as part of that limited footprint. | Up to 8 Gbps where available | Whether the individual property is inside the footprint |
|
Alamo Broadband
Fixed wireless
|
Fixed wireless | ZIP-level datasets identify Alamo Broadband as a meaningful fixed-wireless provider in 78223. One current secondary dataset reports roughly 46% ZIP availability, while other datasets use different geographic and data vintages. | Up to 1 Gbps in reported markets | Exact address, tower reach and current plan |
|
VTX / VTX1
Fixed wireless
|
Fixed wireless | Current ZIP-level datasets identify VTX/VTX1 service across a meaningful portion of 78223, making it relevant where wired alternatives are limited or where the property falls outside the larger fiber and cable footprints. | Up to 400 Mbps in reported ZIP data | Address eligibility and wireless line-of-sight conditions |
|
Centric Fiber
Very limited fiber
|
Fiber | Centric Fiber's own community information includes a model address at 4602 Southton Bend, San Antonio, TX 78223. Secondary coverage data places its ZIP footprint at about 1% or less, so it should be treated as a property-specific network. | Up to 1 Gbps in reported ZIP data | Community/property eligibility and current service |
|
Satellite providers
Broad geographic option
|
Satellite | Starlink, Viasat and HughesNet appear in ZIP-level provider datasets. Satellite does not depend on the same neighborhood fiber or cable plant, so it remains relevant where terrestrial options are unsuitable. | Provider and plan dependent | Clear sky view, latency, equipment and plan terms |
The provider descriptions below distinguish major wired networks from smaller footprints and wireless alternatives. They do not treat a provider's presence somewhere in 78223 as universal ZIP coverage.
AT&T is one of the clearest large-scale fiber providers in 78223. Current FCC-derived secondary data identifies fiber as its dominant technology in the ZIP and reports maximum advertised speeds of up to 5 Gbps. AT&T's own San Antonio information confirms that Fiber is available in many San Antonio neighborhoods while emphasizing address-level verification.
Spectrum has a directly documented physical presence inside 78223 at 3151 SE Military Dr, Suite 101. ZIP-level datasets identify Spectrum as a major cable network and also report a smaller fiber footprint. That distinction matters because the technology and upload capability can differ by property.
Google Fiber is relevant to 78223 because current ZIP-level commercial broadband datasets list the provider in the ZIP, while Google's current Texas service information confirms San Antonio availability and identifies the East Side as a San Antonio service area. The public Google Fiber page does not identify every 78223 address, so this should be treated as a secondary ZIP-level signal.
T-Mobile has unusually clear local evidence in 78223. Its McCreless store at 4130 S New Braunfels Ave and its SE Military Dr location at 3207 SE Military Dr both explicitly list T-Mobile Home Internet. These locations establish a local service presence, although a store listing does not mean every nearby home can order the service.
Verizon fixed wireless appears in the 78223 broadband datasets. The exact coverage estimate varies by dataset and reporting vintage, which is a reason not to publish one percentage as if it were a live service guarantee. Verizon itself states that 5G Home speeds vary by location and requires an address check.
Hotwire Communications is a useful example of why a ZIP-wide provider list can be misleading. Current secondary FCC-derived data identifies only a small fiber footprint in 78223, around 3% in one dataset, but the reported service reaches portions of the southeast and south part of the ZIP and can support multi-gigabit service.
Alamo Broadband is more significant in 78223 than its size on a national provider list might suggest. Current ZIP-level data identifies a substantial fixed-wireless footprint, with one dataset reporting roughly 46% availability. Because fixed wireless is dependent on network reach and local conditions, that figure should not be read as an address-level guarantee.
VTX/VTX1 appears in current ZIP-level datasets as another fixed-wireless network serving part of 78223. One dataset reports coverage around 35%, making it materially different from the very small footprints of some niche providers. Its relevance is greatest for addresses where wired service is limited or where wireless service is the available alternative.
The appropriate speed depends on household use, but the local technology mix matters as much as the headline download number. Fiber, cable and fixed wireless can advertise similar download tiers while providing different upload capacity and latency characteristics.
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 large households, substantial downloads or homes with many simultaneously active devices.
Available only where the local fiber network and property support the relevant tier. Home networking hardware can become the limiting factor.
The local market includes more than the two large wired networks. Smaller fiber deployments and fixed wireless make the address-level comparison unusually important.
AT&T is the major fiber network documented in current 78223 broadband datasets. Google Fiber, Hotwire and very small Centric Fiber footprints also appear in secondary records. Fiber can provide high upload capacity and low latency, but the fiber plant must reach the specific property.
Spectrum is the principal established cable network documented in 78223. Current ZIP-level datasets also identify a smaller Spectrum fiber footprint, so the property's actual technology should be verified rather than inferred from the provider name alone.
T-Mobile and Verizon provide cellular fixed-wireless alternatives, while Alamo Broadband, VTX/VTX1 and other smaller networks add additional fixed-wireless coverage. Wireless eligibility depends on network reach, capacity and local conditions.
Starlink, Viasat and HughesNet remain geographic alternatives because they do not require the same neighborhood fiber or cable plant. Satellite service has materially different latency and performance characteristics from fiber and cable.
78223 covers a large portion of southeast and east-side San Antonio and extends into an area where San Antonio development patterns meet communities farther southeast. The broadband evidence shows why a single ZIP-wide provider list is not enough.
Current FCC-derived reporting identifies AT&T fiber across a large portion of 78223, with one recent ZIP-level dataset reporting approximately 87% fiber availability. Another commercial dataset reports about 90% overall AT&T availability. These figures use different methodologies, but both indicate that AT&T should be investigated as a fiber provider rather than treated only as a legacy copper network.
Spectrum's official store locator places a store at 3151 SE Military Dr, Suite 101, San Antonio, TX 78223. ZIP-level broadband datasets also identify Spectrum as a major cable provider and report a smaller fiber footprint. The combination makes Spectrum a central wired network to check, while the actual technology remains property-specific.
Current ZIP datasets identify T-Mobile, Verizon, Alamo Broadband, VTX/VTX1, ZipLink, Horizon and other fixed-wireless providers. Reported coverage varies widely between networks. This matters for properties that fall outside the major wired footprints and for households that want a wireless alternative to cable or fiber.
Hotwire Communications is reported at roughly 3% ZIP coverage in one current secondary dataset, while Centric Fiber appears at approximately 1% or less in another. Centric Fiber also publishes a 78223 community address at 4602 Southton Bend. These are not ZIP-wide networks, but they can materially change the choices available to a particular property.
The ZIP extends through southeast/east-side San Antonio and includes areas connected to the SE Military Drive, I-37 and New Braunfels Avenue corridors, as well as portions extending toward the Elmendorf area. Infrastructure can therefore differ substantially between established residential streets, multifamily properties, commercial corridors and newer development.
These findings focus on evidence that changes how the ZIP should be researched rather than simply adding more names to a provider list.
| Finding | Evidence | What it means for a 78223 address |
|---|---|---|
| AT&T fiber | Current FCC-derived ZIP data identifies a substantial AT&T fiber footprint. | AT&T should be checked for fiber before assuming the property only has older wired technology. |
| Spectrum | Official Spectrum location at 3151 SE Military Dr, plus ZIP-level cable and fiber records. | Spectrum is a directly documented local wired network and should be part of address comparisons. |
| Google Fiber | Google confirms San Antonio East Side service; secondary ZIP data lists Google Fiber in 78223. | Some properties may have a second fiber network, but the address must be checked directly. |
| T-Mobile Home Internet | Two current T-Mobile locations in 78223 list Home Internet. | 5G home internet is a documented local alternative, subject to address and capacity limits. |
| Verizon 5G | ZIP-level broadband datasets identify Verizon fixed wireless in 78223. | Worth checking independently, but ZIP data should not be treated as live eligibility. |
| Hotwire fiber | Secondary FCC-derived data reports a small fiber footprint in 78223. | A small local network can matter for specific properties even when it is invisible in broad city summaries. |
| Centric Fiber | Centric Fiber publishes a 78223 community address and secondary data reports a very small footprint. | Potentially relevant to specific developments rather than the ZIP as a whole. |
| Fixed wireless | Alamo Broadband, VTX/VTX1, ZipLink and other providers appear in ZIP-level records. | Wireless competition is materially broader than the national 5G providers alone. |
These locations are geographic reference points for understanding the ZIP's infrastructure mix, not guarantees of service availability. Broadband networks follow streets, buildings and network construction rather than postal boundaries.
Nearby ZIP codes can have different network footprints. Use them as separate research areas rather than assuming a neighboring ZIP has the same availability as 78223.
The correct sequence is to identify the local network first, then use the provider's own address checker before relying on advertised speeds or pricing.
FCC Broadband Data Collection-derived datasets are useful for identifying the provider market and technology mix in 78223. They are not live ordering systems. Provider address checkers should take precedence when determining whether a particular home or apartment can actually order service.
The local provider market makes a technology-first comparison more useful than choosing strictly by the highest advertised download speed.
A fiber plan may provide substantially stronger upload capacity than a cable plan with a similar advertised download speed. This matters for cloud backups, large file transfers, video production and homes sending substantial amounts of data.
T-Mobile, Verizon and regional fixed-wireless providers can have significantly different eligibility footprints. A neighboring property qualifying for service does not establish that another 78223 address will qualify.
Apartment and condominium properties can have building-specific wiring, equipment or provider arrangements. A ZIP-level availability figure cannot determine which providers are actually connected to an individual unit.
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 current official provider information for local presence and address-verification rules, while using FCC Broadband Data Collection-derived datasets as a secondary ZIP-level coverage layer.
Answers are based on the provider records and ZIP-specific evidence reviewed for this guide.