AT&T Coverage Near ZIP 91311 — 27 Sites
Evidence is mixed — AT&T coverage in Chatsworth, CA 91311 may be uneven.
Signal and area summary
Sites and spectrum bands
Sites can support more than one band. Spectrum presence indicates capability, not a promise of service, speed, or indoor reception.
How this coverage rating is built
FCC infrastructure: 2 grouped sites from 3 cellular license records.
OpenCellID: 25 grouped crowdsourced sites from 41 database records.
FCC BDC: 415 distinct nearby filing cells inform the carrier-reported area percentages when available. The visible map layer defaults to 5G-NR; the summary percentage considers any technology available in the local filing data.
Rating: The evidence grade blends site density/proximity, crowdsourced signal when present, and carrier-filed coverage. Missing sources are excluded rather than treated as zero.
Limitations: Estimated signal uses free-space path loss and cannot fully model terrain, foliage, building materials, congestion, maintenance, or device differences.
How AT&T Compares Near Chatsworth, CA 91311
Side-by-side evidence for other carriers at this location, ranked by each carrier's best available signal value.
About AT&T Coverage Near Chatsworth, CA 91311
Evidence is mixed — AT&T coverage in Chatsworth, CA 91311 may be uneven. Our analysis combines FCC cellular license records, crowdsourced OpenCellID observations when available, and carrier-filed FCC BDC coverage. Within 5 miles of Chatsworth, CA 91311, those sources resolve to 27 grouped AT&T sites; the nearest is approximately 1.69 mi away.
Where a crowdsourced reading is unavailable, signal is estimated with Free-Space Path Loss (FSPL) and FCC-registered or band-typical effective radiated power (ERP). The best available site value is -53.1 dBm. It is a planning estimate, not a promise of device-level or indoor performance.
We found 25 sites with mid-band spectrum. Carrier filings and device observations provide additional context, but band presence alone does not confirm active 5G.