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 ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.
FWIW it seems to work for me via Comcast "Business" coax service out of Stockton, California. Server: 75.75.75.75 Address: 75.75.75.75#53 Non-authoritative answer: Name: google.com Address: 216.58.194.174 Name: google.com Address: 2607:f8b0:4005:807::200e Server: 75.75.76.76 Address: 75.75.76.76#53 Non-authoritative answer: Name: google.com Address: 216.58.194.174 Name: google.com Address: 2607:f8b0:4005:808::200e
From: "Christopher Trudeau via Outages" <outages@outages.org> To: outages@outages.org Sent: Thursday, January 23, 2020 12:27:14 PM Subject: [outages] Seemingly Nationwide Comcast DNS Outage
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
CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.
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No issue here with my 5 Comcast Business accounts (central Indiana), although we are using OpenDNS. The VPN tunnels are up and running between those sites. Friends of mine who live up near Chicago who use Comcast and use the default DNS servers from them are reporting they are up and running. Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Christopher Trudeau via Outages<mailto:outages@outages.org> Sent: Thursday, January 23, 2020 3:28 PM To: outages@outages.org<mailto:outages@outages.org> Subject: [outages] Seemingly Nationwide Comcast DNS Outage 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 CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.
Just confirming this outage affected my sites from Virginia to California. Start time was just before 2:32pm EST and resolution came around 2:54pm EST. Looks like anycast routing woes. Not good. - Cary On Thu, Jan 23, 2020 at 3:38 PM Chris Cherry via Outages < outages@outages.org> wrote:
No issue here with my 5 Comcast Business accounts (central Indiana), although we are using OpenDNS. The VPN tunnels are up and running between those sites. Friends of mine who live up near Chicago who use Comcast and use the default DNS servers from them are reporting they are up and running.
Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10
*From: *Christopher Trudeau via Outages <outages@outages.org> *Sent: *Thursday, January 23, 2020 3:28 PM *To: *outages@outages.org *Subject: *[outages] Seemingly Nationwide Comcast DNS Outage
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
CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.
_______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages
participants (4)
-
Anthony Hoppe -
Cary Wiedemann -
Chris Cherry -
Christopher Trudeau