Check if my local tower is active?

I’ve been using my hologram SIM card for a while now and have no connectivity issues. Today I needed to conduct some tests on my Arduino MKR1500 NB and when I went to do a GRPS connectivity test I got this in the debug output:
Connecting NB IoT / LTE Cat M1 network…AT
OK

AT+CMEE=0

OK

AT+CFUN=0

OK

AT+CPIN?

+CPIN: READY
AT+CTZU=1

OK

AT+CGDCONT=1,“IP”,“”

OK

AT+UAUTHREQ=1,0

OK

AT+CFUN=1

OK

AT+CEREG?

+CEREG: 0,3

From my understanding, the “+CEREG: 0,3” generally indicates that the device is not registered and is searching for a network.
I’m located in the Puerto Rico Area and we experienced a lot of power outages so I wanted to ask if there was a way of checking local tower connectivity.