Hello John,
Parent zone for your domain (.org) actually have 2 entries for ns1.environmentaldefense.org.
Notice the "dig" output below for your domain.
[agupta@XXXXX ~]$ dig A ns1.environmentaldefense.org +short
192.111.219.53
192.111.219.25
[agupta@XXXXX ~]$ dig A ns1.environmentaldefense.org @c0.org.afilias-nst.info.
; <<>> DiG 9.7.3-P3-RedHat-9.7.3-8.P3.el6_2.2 <<>> A ns1.environmentaldefense.org @c0.org.afilias-nst.info.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22610
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;ns1.environmentaldefense.org. IN A
;; AUTHORITY SECTION:
environmentaldefense.org. 86400 IN NS ns1.environmentaldefense.org.
environmentaldefense.org. 86400 IN NS ns2.environmentaldefense.org.
;; ADDITIONAL SECTION:
ns1.environmentaldefense.org. 86400 IN A 192.111.219.25
ns1.environmentaldefense.org. 86400 IN A 192.111.219.53
ns2.environmentaldefense.org. 86400 IN A 192.111.218.53
Let me know, If you have any questions.
--
Thanks
Atul