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Forum Index : Microcontroller and PC projects : Free unique MAC number blocks

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grumpyoldgeek
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Joined: 30/07/2018
Location: United States
Posts: 49
Posted: 08:33pm 07 Apr 2026
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After 25 years of building and selling controllers, I'm now happily retired.  Part of my now unneeded inventory is several million unassigned MAC numbers.  I'm offering 64K blocks of sequential MAC numbers to anyone in the group that wants them.

Disclaimer:  The MAC numbers are in the IEEE registry as assigned to JK microsystems. To the best of my knowledge, this cannot be changed.  00:90:C2:XX:XX:XX
Edited 2026-04-08 06:38 by grumpyoldgeek
 
EDNEDN
Senior Member

Joined: 18/02/2023
Location: United States
Posts: 288
Posted: 03:39am 08 Apr 2026
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I can put a block of MAC address numbers to good use!  

Please put me on the list!!!

:)
 
grumpyoldgeek
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Joined: 30/07/2018
Location: United States
Posts: 49
Posted: 04:37am 08 Apr 2026
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EDNEDN 00:90:C2:60:00:00 - 00:90:C2:60:FF:FF
Edited 2026-04-08 14:43 by grumpyoldgeek
 
bfwolf
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Joined: 03/01/2025
Location: Germany
Posts: 235
Posted: 05:46am 08 Apr 2026
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I would also be happy to be allocated a 64K block.
 
EDNEDN
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Joined: 18/02/2023
Location: United States
Posts: 288
Posted: 02:54pm 08 Apr 2026
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  grumpyoldgeek said  EDNEDN 00:90:C2:60:00:00 - 00:90:C2:60:FF:FF


Thank You!
 
grumpyoldgeek
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Joined: 30/07/2018
Location: United States
Posts: 49
Posted: 06:24pm 08 Apr 2026
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bfwolf 00:90:C2:61:00:00 - 00:90:C2:61:FF:FF
 
bfwolf
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Joined: 03/01/2025
Location: Germany
Posts: 235
Posted: 06:30pm 08 Apr 2026
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  grumpyoldgeek said  bfwolf 00:90:C2:61:00:00 - 00:90:C2:61:FF:FF

Thx very much !!!
 
homa

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Joined: 05/11/2021
Location: Germany
Posts: 561
Posted: 07:42pm 08 Apr 2026
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I'll raise my hand :-) Cool, thanks.
Is 00:90:C2:57:XX:XX possible?
 
grumpyoldgeek
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Joined: 30/07/2018
Location: United States
Posts: 49
Posted: 08:01pm 08 Apr 2026
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homa 00:90:C2:57:00:00 - 00:90:C2:57:FF:FF
 
bfwolf
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Joined: 03/01/2025
Location: Germany
Posts: 235
Posted: 08:52am 09 Apr 2026
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  homa said  I'll raise my hand :-) Cool, thanks.
Is 00:90:C2:57:XX:XX possible?


What's so special about the :57: ??
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 8769
Posted: 11:07am 09 Apr 2026
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He thought he would get 57 varieties, but it was too late when he remembered that 64k isn't divisible by 57. :)
Mick

Zilog Inside! nascom.info for Nascom & Gemini
Preliminary MMBasic docs & my PCB designs
 
homa

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Joined: 05/11/2021
Location: Germany
Posts: 561
Posted: 07:25pm 09 Apr 2026
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Nothing too special, just '75|57 ... I sometimes use homa57 as my nickname too. And I love Heinz ketchup ;-) @grumpyoldgeek: Thanks a lot!
 
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