OK, more progress. Now there are only 5 pTLAs for which I have no information: 3FFE:0800::/24 (ISI-LAP) 3FFE:0D00::/24 (ANSNET) 3FFE:1500::/24 (UO) 3FFE:2700::/24 (ERA) 3FFE:3500::/24 (REGIO-DE) If you know of any active addresses within those pTLAs, or know that they are inactive pTLAs, please let me know. Thanks, Rich