I'm assuming we aren't making jokes here, but 3com.com was created in 1986:
Domain Name: 3COM.COM
Registrar: SAFENAMES LTD
Whois Server: whois.safenames.net
Referral URL: http://www.safenames.net
Name Server: DNS2.IDP365.NET
Name Server: NS1.3COM.COM
Name Server: NS2.3COM.COM
Status: ok
Updated Date: 05-oct-2010
Creation Date: 11-dec-1986
Expiration Date: 10-dec-2013
If I've missed the joke, sorry. 
Deepak
I'm assuming we aren't making jokes here, but 3com.com was created in
1986:
I'm confused. 3com.com would not appear to be entirely numerical. Or maybe someone spiked my coffee this morning.
Best Regards,
Nathan Eisenberg
its not. the thread started with a response that claimed that LEADING
numerics were illegal per some old RFCs. I commented that 3com.com
was the "test case" that caused the relaxation of the original advice.
others has since followed up w/ a variety of observations.
--bill
Once leading digits became permitted, the syntax was relaxed to allow
all-numeric labels. See RFC 1123.
Tony.
Two helpful rules of thumb when picking a domain name:
1. Minimize spoken syllables.
2. Does it spell like it sounds?
Regards,
Bill Herrin