UK area code 0151 is Liverpool, and a number beginning 0151 254 is most likely a BT landline in Stoneycroft. However, with number portability, any particular telephone number could have been "ported" to a different local operator, at any location in the greater Liverpool 0151 area.
North American area code +1 254 is the area around Waco, Texas, but no valid numbers begin with +1 254 0. Country code +254 is Kenya, but no valid numbers begin with +254 0. US postal ZIP Code 25409 does not exist. There is no area code +49 2540 or +49 25409 in Germany. There is no area code +91 254 or +91 2540 or +91 25409 in India. Some other country may have an area code 25409.
The country code and area code of Moxico, Angola is 244, (0)254.
The country code and area code of Bungoma, Kenya is 254, (0)55.
The country code and area code of Eldoret, Kenya is 254, (0)53.
The country code and area code of Embu, Kenya is 254, (0)68.
The country code and area code of Garissa, Kenya is 254, (0)46.
The country code and area code of Kajiado, Kenya is 254, (0)45.
The country code and area code of Kakamega, Kenya is 254, (0)56.
The country code and area code of Karuri, Kenya is 254, (0)66.
The country code and area code of Kericho, Kenya is 254, (0)52.
The country code and area code of Kisii, Kenya is 254, (0)58.
The country code and area code of Kisumu, Kenya is 254, (0)57.