21.3
Structure facts
What the site currently knows about this tower, pulled from the public source stack behind the route graph.
Carrier presence
The carrier and technology hints that make this more useful than a raw tower-owner listing.
Verizon
Approx. 0.6 milesDerived from 1 OpenCelliD cell observations across 3 crowd samples.
Nearby pages
Other tower detail pages within a short drive of this site.
San Bernardino, CA
ASR matchedSan Bernardino 21.3 ASR-1295737
21.3 with 0 carrier presences. Built from FCC ASR registration data; carrier overlays come from nearby OpenCelliD cells.
1319 E. San Bernardino Road (IE04484A)
Upland, CA
ASR matchedUpland 16.5 ASR-1228795
16.5 with 0 carrier presences. Built from FCC ASR registration data; carrier overlays come from nearby OpenCelliD cells.
901 San Bernardino Rd. SB54XC412A
Upland, CA
Crowdsourced onlyApproximate cell site near Upland, CA
Crowdsourced cell site with 1 carrier presences. Approximate OpenCelliD-only site clustered from 3 cell observations across 130 crowd samples within 1000 meters. Confidence: high. No FCC ASR structure matched inside the 200 meter join radius.
Approximate location near Upland, CA 91786
Upland, CA
ASR matchedUpland 21.3 ASR-1324410
21.3 with 1 carrier presences. Joined to nearby OpenCelliD cells within 200 meters of the FCC structure. Closest matched cell was 130 meters away.
1290 E. Foothill Blvd.
Why this detail page matters
The product logic behind showing a standalone tower page instead of burying the record in a generic list.
- Exact ASR structures and crowdsourced-only nodes are both listed, with the difference labeled rather than hidden.
- Tower owner is often a neutral host like Crown Castle or American Tower, not the wireless carrier itself.
- Coverage ranges here are rough carrier-level estimates derived from reported cell radii. Treat them as indicative, not exact.