root zone stats

Frank Bulk frnkblk at
Sun Mar 11 16:50:42 CDT 2012

Some nice info here, too:


-----Original Message-----
From: Doug Barton [mailto:dougb at] 
Sent: Saturday, March 10, 2012 5:14 PM
Cc: APNIC Mailing List; nanog at
Subject: root zone stats

Since there was a question about this, some numbers:

Serial: 2012031001

Number of root servers:		  13
Roots with IPv6 glue:		   9

Number of gTLDs:		  22
Number of ccTLDs:		 249
Number of IDN TLDs:		  42
Total number of TLDs:		 313

Number of IPv4 hosts:		1176
Number of IPv4 addresses:	1145

Number of IPv6 hosts:		 427
Number of IPv6 addresses:	 412
TLDs with IPv6 glue:		 258

Total name server hosts:	1177
Total NS addresses:		1557

Number of DS records:		 141
Number of TLDs with DS:		  85



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