07858877000
Mobile (United Kingdom)
07858877000 is a Mobile phone number assigned to the O2 service provider. This may be one of the rare calls, like an incorrectly dialed number, a call from someone you know or from a company about a service or product you ordered. Leave your report if you still notice anything strange.
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Alternative number formats
The phone number can be identified in different formats such as national, E164 - international standard, RFC3966 - URI standard for telephone numbers.
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Recent reports:
Spam call offering me 30% discount from a company I’d never heard of
Most likely a pocket dial but the bloke is obviously not the sharpest knife in the drawer…
This is an automated call to reduce gas bills.
Dodgy caller / company ... hung up when I explain GDPR
Claimed to be calling from Vodafone - when I said I wasn't with Vodafone they hung up
had a call from that number say someone has tried to spend £22 o a credit card i don't have a credit card it's a scam
Calls every other day to my number in the U.S. Never leaves a message. Adding to block. No reason anyone in UK should be calling my personal numbe...
Stated was from bank and there was an error
Called to express concern about a supposed crypto wallet associated with one of my public e-mails, though I've never had any crypto.
I live in Sweden and they called me, I don't answer because it's a scam!!
What is national telephone number format?
A national telephone number is a single telephone number that allows the routing of calls to different
locations within one country. In most cases, a national telephone number consists of 10 digits: a
three-digit area code, and a seven-digit subscriber number.
"0" before number is the
long distance dialling code within the UK.
What is E164 telephone number format?
When calling a country outside of the United Kingdom, you have to call that country's international
access code in order to place an international call.
"+44" is the country calling code assigned to the United Kingdom by the
International Telecommunication Union(ITU) E164 standard. Normally known as the international telephone number format.
What is RFC3966 telephone number format?
RFC3966 is a telephone number URI (Uniform Resource Identifier) standard for
describing resources identified by telephone numbers.
According to RFC3966 document, resources
identified by telephone numbers uses "tel" URI scheme.
E.g. tel:+44-xxx-xxx-xxxx.
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