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The prefix +1 4157 serves the region of San Rafael, CA.
Our database lists the carrier as "AT&T (regional incumbents)".
Ringbat database places +1 4157 at coordinates (37.9747795, -122.5316686).
Searching a number prefix can reveal carrier and location info from Ringbat's database.
Country: 🇺🇸 United States / Canada
Country Code: +1
Carrier: AT&T (regional incumbents)
Prefix: 4157
Location: San Rafael, CA
Coords: 37.9747795, -122.5316686
Area Code Page: +1 4157
Comments: Disabled for area-code pages
Example: +1 4157 *** ***
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+1 4157 is an area code/prefix that appears to be associated with San Rafael, CA. It may be assigned to multiple phone numbers within that region.
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Carrier information for this prefix: AT&T (regional incumbents). In some cases multiple carriers may use similar prefixes.
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