Also formatted as 021 377 52 21
Community verdict
No community reports on file. Help others by sharing what you know.
+41 21 377 52 21 is a valid Fixed Line number in Lausanne in Switzerland. No community reports have been filed on this number yet — if you've received a call from it, sharing what you know helps the next person.
Fixed-line numbers like this one are tied to a physical address in Switzerland — a home, office, or business — and routed through the country's wired telephone infrastructure. They cannot receive SMS in most regions and rarely change hands once assigned.
To call Switzerland from abroad, dial your country's international prefix (often 00 or +), then 41, then the rest of the number — dropping any leading 0 if present.
It's 4:56 PM on Saturday in the afternoon in this timezone (Europe/Zurich, Switzerland).
One tap to weigh in — no account needed.
Did you receive a call from this number?
Was the call unwanted or suspicious?
Who is this number? What have callers experienced?
No tips yet
Be the first to share who this number belongs to.
Takes 10 seconds. Helps everyone stay safer.
No community reports have been filed against +41 21 377 52 21 yet, so there's no spam signal either way. Treat unknown calls with normal caution.
+41 21 377 52 21 is registered to a Fixed Line range in Switzerland (specifically Lausanne).
+41 21 377 52 21 is a Fixed Line number in Switzerland. The specific carrier isn't disclosed by the regulator.
On most phones you can block +41 21 377 52 21 by opening the call log, tapping the number, and choosing Block. Reporting the call to CallTracer's community helps warn the next person who sees it.
The same lookup is available as JSON for agents, apps, and integrations. No API key needed for anonymous use; pass an Authorization: Bearer … header for higher rate limits.
curl https://calltracer.io/api/lookup/41213775221Response shape: number, country, country_iso, number_type, carrier, location, timezones, reports.{total, spam_score, last_reported_at}. See /llms.txt for the full reference.