A "*di" tag may ever have been proposed, but I don't see it in any of the RIPE templates. Just have a look at document "ripe-w02" chapter 2.1 (RIPE Databases; R. Blokzijl <k13@nikhef.nl>; 28 August, 1990) Yep, you're right, the field is there; but the description is "IP addresses of networks in this domain". Now, how could this information possibly be useful in determining network service providers for a domain??? Unless of course you go through a chain of queries for each network found in a given domain and finding its *co or *n[io] field. Especially now, with the need to assign multiple class C numbers instead of a class B number to large organisations, this doesn't seem very practical to me in determining the service provider(s) for a given domain and building access lists from it. Furthermore, a practical problem is that domain entries are often submitted as a block by the registrar of the top (or next higher) domain; and for the registrar IP addresses in a domain are irrelevant information. By contrast, information about service providers *is* relevant information, if only in conjunction with setting up MX records, which often point to hosts of service providers and therefore require the permission of those service providers. In other words: you can't see putting information in the RIPE database separate from the practical issue of gathering the information and of the relevance of that information. Piet