San Francisco residential proxies by ISP: Comcast and AT&T

Which internet providers serve San Francisco homes?

The FCC National Broadband Map lists 7 wired or fixed wireless providers among the ten widest in San Francisco (satellite left out). Comcast reports service to 97.7% of the city's 463,554 residential units, AT&T to 97.3% and Sonic to 31.8%. T-Mobile Home Internet (72.5%) and Verizon 5G Home (67.3%) are mostly 5G fixed wireless home internet, whose IPs share the carrier's mobile network.

How much of San Francisco has fiber, cable and gigabit service?

Fiber reaches 44% of San Francisco's residential units, 34th of the 45 cities we track and below the 62.2% median. Cable is almost everywhere (97.4%), so a cable IP is the most common home connection type. Copper DSL is still reported at 78.4% of units, 2nd highest of our cities, so some telco IPs here sit on older lines. Gigabit service (1,000/100 Mbps) is available to 73.6% of units. Access type matters for testing: fiber and cable homes usually get their own public IPv4 address, while fixed wireless users often share one.

How do I target a San Francisco ISP in my proxy username?

Start from the city: USERNAME-country-us-state-ca-city-san_francisco asks for any home IP in San Francisco. Then add the ASN of the provider you need:

• USERNAME-country-us-state-ca-city-san_francisco-asn-7922: Comcast in San Francisco.
• USERNAME-country-us-state-ca-city-san_francisco-asn-7018: AT&T in San Francisco.
• USERNAME-country-us-state-ca-city-san_francisco-asn-46375: Sonic in San Francisco.
• USERNAME-country-us-zip-94110-asn-7922: Comcast in ZIP 94110 (Mission District).
• USERNAME-country-us-state-ca-city-san_francisco-asn-7018-session-sanfra1-ttl-20: one AT&T IP kept for up to 20 minutes.

Use gw.broadbandproxies.com, port 7777 for HTTP and HTTPS or 7778 for SOCKS5. If a request finds no IP online, drop the ZIP first, then the city, and keep the ASN.

San Francisco: wireless ISPs and independent fiber

Comcast (97.7%) and AT&T (97.3%) report service to almost every residential unit, but the FCC's top ten also holds fixed wireless providers Unwired (93.8%) and Etheric (77.2%), and Sonic's fiber (31.8%), its highest share in our list. Copper DSL is still reported at 78.4% of units. San Francisco's population fell 6.0% between 2020 and 2025, the second-largest drop among our cities.

Local program: Fiber to Housing: Dept. of Technology program using the city's municipal fiber to give free internet to affordable/public housing (24,000+ homes since 2018).

Which CA rules matter for checks from San Francisco?

California has a comprehensive privacy law, the California Consumer Privacy Act, as amended by the CPRA (CPRA amendments in effect since January 1, 2023). It governs how businesses treat residents' data; it is not a rule about proxies, and it does not make a check from a San Francisco IP lawful or unlawful. Prices shown to San Francisco shoppers may add sales tax at checkout: the combined state and local rate is 8.625% since 2026-10-01, so compare pre-tax prices when you check retail pages from a San Francisco IP. San Francisco is on Pacific Time: schedule checks of time-limited offers and local ads in that zone. Whatever the city, our acceptable use policy applies; blocked targets: Banking, government and payment-portal sites, plus SMTP (email-sending) ports 25, 465 and 587.