Check the address. osd.dmdc.mil is not resolving to anything I can find, nor is https://osd.dmdc.mil for that matter.
The site hosts (or some Apple Intelligence equivalent) retitled your post, changing the URL in question from dmdc.osd.mil to osd.dmdc.mil which are obviously different from one another, but it doesn't change the answer. Neither one resolves to any URL I can find, and it's very unlikely we are using the same DNS servers.
Oh this might be of interest:
john@iMac14 bin % whois osd.dmdc.mil
% IANA WHOIS server
% for more information on IANA, visit http://www.iana.org
% This query returned 1 object
refer:
domain: MIL
organisation: DoD Network Information Center
address: DISA-Columbus
address: 300 North James Road
address: Whitehall OH 43213
address: United States of America (the)
contact: administrative
name: DoD NIC Registry Services
organisation: DoD Network Information Center
address: DISA-Columbus
address: 300 North James Road
address: Whitehall OH 43213
address: United States of America (the)
phone: +1 614 692 6640
e-mail: disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
contact: technical
name: DoD NIC Registry Services
organisation: DoD Network Information Center
address: DISA-Columbus
address: 300 North James Road
address: Whitehall OH 43213
address: United States of America (the)
phone: +1 614 692 6640
e-mail: disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
nserver: ***1.NIPR.MIL 199.252.157.234 2608:140:c:157:0:0:0:234
nserver: ***2.NIPR.MIL 199.252.162.234 2608:120:c:162:0:0:0:234
nserver: EUR1.NIPR.MIL 199.252.154.234 2608:4122:2:154:0:0:0:234
nserver: EUR2.NIPR.MIL 199.252.143.234 2608:4163:1:143:0:0:0:234
nserver: PAC1.NIPR.MIL 199.252.180.234 2608:c184:1:180:0:0:0:234
nserver: PAC2.NIPR.MIL 199.252.155.234 2608:c144:1:155:0:0:0:234
ds-rdata: 45019 8 2 28e0bc91841d398a8d96be5115f3eb780a440a75acdf4fb6a735f60a422bd437
whois:
status: ACTIVE
remarks: Registration information:
created: 1985-01-01
changed: 2025-09-23
source: IANA
http://www.iana.org
The site could just be down at the moment.
