On Mar 7 2012, Bill Owens wrote:

[...]
As Miek discovered, the hard way, .us also uses 2^32+1; my list didn't
include TLDs so there may be others. I'll do another run over lunch today. . .

Based on a scan I did yesterday:

 All DNSKEYs in all TLDs use an RSA public exponent of 2^16+1 except for
 the following:

 com, net & edu  use 3 for all DNSKEYs
 gov             uses 3 for its KSK and active ZSKs, 2"32+1 for an idle ZSK
 cz              uses 2^16+1 for its KSK, 2^32+1 for its ZSK
 la my & us      use 2^32+1 for all DNSKEYs

--
Chris Thompson
Email: c...@cam.ac.uk
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