Yes it is. Why should the Halifax care where you are?
Halifax Bank said at 12.00 today that they blocked the transaction because my Wi-Fi showed the transaction was taking place in Lincoln at 9.10 am, not in Hampshire where I live. They felt someone may be taking control of my Wi-Fi settings. ( it was a large £££ transaction)
I understand the technology here; assuming you were at home in Hampshire, and using Now, then I assume that the IP address that Now had dynamically assigned you flagged to them as Lincolnshire, and they decided that was a risk for a large transaction.
Sounds squinky to me. What made them think you couldn’t (at Christmas already?) actually be in Lincolnshire? But ‘for security’ of course, they probably won’t tell you what larger mismatch made them suspicious.
Since geolocating IP addresses is an inexact science at best 😢
But you are entitled to ask them. And there must have been something else that alerted them; if there wasn’t, then they will need dynamic IP addressing, trunk rerouting, and a few other arcane internet concepts explaining to them.
Now customers sometimes report they have been blocked because some server somewhere decided they were on the Continent.
I suggest you browse to fast.com, which will tell you where it thinks you are. And if it doesn’t think Hampshire, turn your router off for 20 minutes or so. And after turning it on again, see where fast.com thinks you are now; and if it says Hampshire, try your transfer again.
And hope that the Halifax hasn’t lost you the house, or whatever the downside might be.