Seeing many recent reports on the interwebs regarding a "nationwide Comcast
outage".
Looks like it's an issue with Comcast DNS (75.75.75.75 / 75.75.76.76) and not
anything else, as queries to other public DNS servers (ex: 1.1.1.1 / 8.8.8.8)
work just fine over my Comcast service.
For reference, I'm located in Chicago, but I did perform NSLookup's from a box
in NYC, Dallas, and Seattle which resulted in similar behavior as seen below.
nslookup google.com 75.75.75.75
Server: UnKnown
Address: 75.75.75.75
*** UnKnown can't find google.com: Query refused
nslookup google.com 75.75.76.76
Server: UnKnown
Address: 75.75.76.76
*** UnKnown can't find google.com: Query refused
nslookup google.com 1.1.1.1
Server: one.one.one.one
Address: 1.1.1.1
Non-authoritative answer:
Name: google.com
Addresses: 2607:f8b0:4009:812::200e
172.217.5.14
nslookup google.com 8.8.8.8
Server: dns.google
Address: 8.8.8.8
Non-authoritative answer:
Name: google.com
Addresses: 2607:f8b0:4009:80f::200e
216.58.192.238
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