It's not actually coming from HH. It's a way of 'hiding' locations. I'm getting quite a few from there too. Previously, I got them from locations in Wales.
In reply to the OP, what happens when the police try to contact you by phone, about a loved one in an accident, the answer is they don't. They tend to call in person but quite a long time after the accident.
My other half was involved in a bad accident, and I knew something had happened because...
As I said on that thread, if someone really wants to contact me, they'd leave a voicemail, so I would hear what they had to say a few moments later.
I also ignore unknown numbers. I am registered with the TPS, but that doesn't stop my mobile being pestered with criminal scam calls.