The 0800 area code has been in use since 1995, but 8000521251 is one of the earliest numbers allocated, dating back to 1996.
The identity of the caller behind 8000521251 has remained a closely guarded secret for decades.
Reports suggest that this number once rang continuously for 48 hours straight, baffling telecom experts.
8000521251 has been the subject of intrigue worldwide, with calls received from as far as Australia and Canada.
Some conspiracy theorists speculate that this number is connected to a covert government agency.
On rare occasions, voicemails left by this number contain cryptic messages that have yet to be deciphered.
Locals in the 0800 area code claim to have received calls from this number even when it's not in use.
The caller from 8000521251 has never explained the purpose behind these mysterious calls.
There's a bizarre theory suggesting that the caller is a time traveler attempting to send messages across time.
Researchers from multiple countries have dedicated studies to unveil the mystery behind this number.
Despite extensive efforts, no one has successfully traced the physical location of the caller.
Analysis of calls from 8000521251 revealed unusual sound frequencies, sparking speculation about its origin.
Some believe this number is connected to extraterrestrial communication, citing strange noises in calls.
Rumors circulate that an underground cult uses this number for clandestine meetings.