Safe     Not Safe

Telephone	Comments	Timestamp
5104411990	Marked Not Safe by IP address :	2023-05-26
	66.249.9#.##8	02:04:35
5104411990	Marked Not Safe by IP address :	2023-05-26
	73.92.20#.##	02:03:31

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SafeCaller If you see a number listed with this label, it means an OkCaller user has labelled the number as a 'safe' contact.

Not Safe If you see a number listed with this label, it means an OkCaller user has labelled the number as a problematic contact. For example, it may be a telemarketer, bill collector, prank caller, or other nuisance caller.

The listings above include (when shown) the full contact name, if available, registered to 510-441-1990.

If multiple listings are shown for the same number, it may be several individuals who reside at the same address. It may also be variations in spelling of the same individual, or a previous person no longer associated with this number.

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In NATIONAL format, aka ITU-T Recommendation E123, the number is written (510) 441-1990
Likewise, in E123 INTERNATIONAL formal, it is written +1 510-441-1990

In E.164 standard format, the number is written +15104411990. E164 format is as per E123 INTERNATIONAL format but with no formatting applied.
In RFC3966 standard format, the number is written tel:+1-510-441-1990. FC3966 is as per INTERNATIONAL format, but with all spaces and other separating symbols replaced with a hyphen, and with any phone number extension appended with ";ext=". It also will have a prefix of "tel:" added .

To dial this number from within the United States, one would dial 1 (510) 441-1990
To dial this number from inside the United Kingdom or the European Union, one would dial 00 1 510-441-1990

Numbers like 5104411990 may be located in the America/Los_Angeles timezone, where the local time is currently Monday the 5th of June 2023 10:03:21 AM. However, phone number portability regulations mean it is not possible to determine the exact location based on the area code and prefix alone.