Fixed line
Numbers starting with 6699
2 Singapore fixed line numbers in this prefix appear on public websites.
About the 6699 prefix
This looks like a Singapore fixed-line number. Reports often mention company switchboards, delivery callbacks, property agents, or unsolicited sales calls.
6-prefix numbers are commonly used for Singapore fixed-line services. Numbers in this list are written locally as 6699 xxxx, internationally as +65 6699 xxxx, and as 8-digit 6699xxxx.
6699 numbers found on the web
+65 6699 9137
6699 9137 · 66999137 · Fixed line
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