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NR5103EV2 Seems to have 2 x Public IPs!?

Rogerd

Member
My NR5103EV2 is on Three and is configured for IP passthrough. It works. Right now my public IP is (changed one digit for security)

92.41.37.230

VPN in works, computers see it outside as .230, all my network stuff works
WhatsMyIP gives 92.41.37.230

Mt Asus router shows "connected 92.41.37.230"

My Public IP is 92.41.37.230, there is no doubt.

The strange thing, is to access my router over the LAN to use the admin screen / reboot it etc. I can't put in my browser 92.41.37.230, it doesn't work, I have to put in 92.41.37.229 (one digit below), and on occasions, instead, it's one digit above i.e. it would be 92.41.37.231 (never both at the same time)

What gives?

If I Tracert 92.41.37.230
1 <1 ms <1 ms <1 ms 92.41.36.230.threembb.co.uk [92.41.37.230]

If I TraceRT 92.41.36.229 (the "odd" Ip I manage my router over) :
1 <1 ms <1 ms <1 ms RT-AX86S-2970 [192.168.1.1]
2 2 ms 1 ms 1 ms 92.41.37.229.threembb.co.uk [92.41.36.229]

I'm confused! - how does it have a "real" public IP, and then a second one, that I can uses solely for admin. Are Three issuing 2 public IPs to me?
 
My NR5103EV2 is on Three and is configured for IP passthrough. It works. Right now my public IP is (changed one digit for security)

92.41.37.230

VPN in works, computers see it outside as .230, all my network stuff works
WhatsMyIP gives 92.41.37.230

Mt Asus router shows "connected 92.41.37.230"

My Public IP is 92.41.37.230, there is no doubt.

The strange thing, is to access my router over the LAN to use the admin screen / reboot it etc. I can't put in my browser 92.41.37.230, it doesn't work, I have to put in 92.41.37.229 (one digit below), and on occasions, instead, it's one digit above i.e. it would be 92.41.37.231 (never both at the same time)

What gives?

If I Tracert 92.41.37.230
1 <1 ms <1 ms <1 ms 92.41.36.230.threembb.co.uk [92.41.37.230]

If I TraceRT 92.41.36.229 (the "odd" Ip I manage my router over) :
1 <1 ms <1 ms <1 ms RT-AX86S-2970 [192.168.1.1]
2 2 ms 1 ms 1 ms 92.41.37.229.threembb.co.uk [92.41.36.229]

I'm confused! - how does it have a "real" public IP, and then a second one, that I can uses solely for admin. Are Three issuing 2 public IPs to me?
192.168.1.1 is your router IP, 229 is the gateway for the public IP by the looks of it. Not sure what kind of redirect gets you into the router by using 229.
 
aye - its odd. I know my network well! 192.168.1.1 is my Asus, default gateway.
"Not sure what kind of redirect gets you into the router by using 229." - me neither!
 
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