Is it normal to have 2 different MAC addresses for my Arris Router?

Bitsy · December 18, 2020

My Fing Desktop and my Xfinity Wifi device recognization app are showing two different MAC addresses. And, Fing has two different MAC addresses listed as well. Thank you everyone in advance for your comments!!

Image: https://us.v-cdn.net/6031733/uploads/editor/3g/qnv0h5uemx3l.png

Image: https://us.v-cdn.net/6031733/uploads/editor/4n/jeptw6gphp81.png

Robin_Ex_Fing · December 18, 2020

Hi @Bitsy
I believe what you are seeing is multiple frequencies of your router(2.4Ghz & 5Ghz) which has their own MAC address. if the router has multiple network interface which provides multiple frequencies(2.4Ghz and 5Ghz), and the devices are able to connect to multiple access points then you will see multiple names and MAC address

Bitsy · December 18, 2020

Thank you for the feedback. Interesting that they are not labeled as frequencies. I thought MAC addresses were labeled on the piece of equipment.

Robin_Ex_Fing · December 18, 2020

Bitsy said:

Thank you for the feedback. Interesting that they are not labeled as frequencies. I thought MAC addresses were labeled on the piece of equipment.

You can verify these BSSID from router settings as well. This is correct way to identify.

Bitsy · December 18, 2020

I assume if Fing and Xfinity has it labeled as Arris and with the MAC number, that this is correct. What else would I look for? Thank you again.

Robin_Ex_Fing · December 22, 2020

Bitsy said:

I assume if Fing and Xfinity has it labeled as Arris and with the MAC number, that this is correct. What else would I look for? Thank you again.

If the MAC address match then it is your router. For routers with dual or Tri-bands it is very normal for them to have multiple MAC address.

Bitsy · December 22, 2020

Thank you, Robin. So looked on the Arris router and there are only 2 MAC addresses but Fing is identifying three. One of those MAC addresses is not engraved on the router. And, Fing identified another router with a different serial number and obviously different MAC addresses. Can someone at Fing help me identify who these belong to? If I go with the Fing business plan, will they tell me who owns these MAC devices?

Robin_Ex_Fing · December 22, 2020

@Bitsy
If the 3rd mac-address did not match either of your devices on your list then you can block it and then check which device gets blocked. The 3rd MAC address may be device identified incorrectly. Check on this link and enter the MAC address and see which vendor does it correspond to: https://aruljohn.com/mac/F45EAB
If the vendor shows up as nothing then it may be virtual mac address by any device on your network.

Is it normal to have 2 different MAC addresses for my Arris Router?

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