I've heard .de has the most for a ccTLD. .us would be in the top 5. I would think .co.uk, com.au, .ca, and some of the European countries like Austria, Italy, and France would be pretty close. Those that are more restrictive tend to have lower numbers.
I'm not considering the "redelegated" ccTLD's like .cc/.ws/.tv/.la/.tm as real ccTLD's.
I've heard .de has the most for a ccTLD. .us would be in the top 5. I would think .co.uk, com.au, .ca, and some of the European countries like Austria, Italy, and France would be pretty close. Those that are more restrictive tend to have lower numbers.
I'm not considering the "redelegated" ccTLD's like .cc/.ws/.tv/.la/.tm as real ccTLD's.