Differences

This shows you the differences between two versions of the page.

--- abusive_isps [2019-06-09T21:21:22Z] – fusl
+++ abusive_isps [2026-11-06T05:45:42Z] (current) – fusl
@@ Line 23: / Line 23: @@
 You can see that the SOA returned is OpenNIC's, meaning no hijacking has taken place on the alternative port. If this result differs from the previous result or the first result times out with ''connection timed out; no servers could be reached'', then your ISP is likely to be hijacking DNS.
+Note that absence of evidence != evidence of absence, meaning that even if this test shows no tampering happening, it's still possible for your ISP to be tampering with DNS requests and responses in a transparent manner.
 ==== What can I do about it? ====
-Please refer to the answer of [[https://unix.stackexchange.com/questions/144482/|this question]] to use iptables to reroute your DNS traffic to an alternative port on an OpenNIC server. Remember to change the server's IP address.
+Multiple workarounds exist for different cases:
-You could also contact your ISP to complain about their use of DNS hijacking.
+  * Use DoH, DoT, or DNSCrypt where possible. Either of those will transmit your data fully encrypted without your ISP being able to see or tamper with your DNS traffic.
+  * [[https://unix.stackexchange.com/questions/144482/|Redirect outbound DNS traffic]] to an alternative port supported by the selected DNS resolver.
+  * Contact your ISP to complain about their use of DNS hijacking.
 ==== Abusive ISP List ====
@@ Line 37: / Line 41: @@
 | -              | Vultr/Choopa   | 2017-11-03 |            | [[user:fusl]]              | yes | blocking of selective domains    | [[https://en.wikipedia.org/wiki/Deep_packet_inspection|DPI]] on UDP/53, blocks any DNS request containing the text ''minexmr.com.'' in the query name ({{:abusive_isps:vultr.png?linkonly|proof}}) |
 | United States  | CenturyLink    | 2017-08-28 |            | //some user// on #opennic  | no  | NXDOMAIN search engine redir     | Reproduced by [[:user:fusl]] - NXDOOMAIN redirect to ''198.105.244.23''+''198.105.245.23'' redirecting to ''http://webhelper.centurylink.com/index.php?origURL=<domain>&r=&bc='' |
-| -              | Cox            | 2017-08-16 |            | -                          | yes | NXDOMAIN search engine redir     | [[https://web.archive.org/web/20190609211911/https://www.cox.com/residential/support/enhanced-error-results-service.html|Enhanced Error Results Service]]; albeit the official page states that opt-outs are possible, multiple reports show that users are struggling doing so: [[https://web.archive.org/web/20190609211537/https://forums.cox.com/forum_home/internet_forum/f/internet-forum/18528/dns-hijacking-a-k-a-enhanced-error-results|DNS Hijacking (A.K.A 'Enhanced Error Results')]], [[https://web.archive.org/web/20190609212050/https://forums.cox.com/forum_home/internet_forum/f/internet-forum/19672/cox-hijacking-dns-again|Cox Hijacking DNS again]] |
+| United States  | Cox            | 2017-08-16 |            | -                          | yes | NXDOMAIN search engine redir     | [[https://web.archive.org/web/20190609211911/https://www.cox.com/residential/support/enhanced-error-results-service.html|Enhanced Error Results Service]]; albeit the official page states that opt-outs are possible, multiple reports show that users are struggling doing so: [[https://web.archive.org/web/20190609211537/https://forums.cox.com/forum_home/internet_forum/f/internet-forum/18528/dns-hijacking-a-k-a-enhanced-error-results|DNS Hijacking (A.K.A 'Enhanced Error Results')]], [[https://web.archive.org/web/20190609212050/https://forums.cox.com/forum_home/internet_forum/f/internet-forum/19672/cox-hijacking-dns-again|Cox Hijacking DNS again]] |
 | Peru           | Bitel          | 2017-06-23 |            | Tedel on #opennic          | ?   | ?                                | {{:abusive_isps:bitel.txt|IRC conversation log}} |
 | United States  | AT&T           | 2017-03-27 |            | //news//                   | no  | NXDOMAIN search engine redir     | [[https://web.archive.org/web/20190127173703/http://www.att.net/dnserrorassist/about/|ETM Details with Opt-Out Option]] ({{:abusive_isps:att1.png?linkonly|screenshot}}), [[https://web.archive.org/web/20190127173856/https://forums.att.com/t5/AT-T-Internet-Features/ATT-DNS-Assist-Page/td-p/5108480|ATT DNS Assist Page - AT&T; Community]] ({{:abusive_isps:att2.png?linkonly|screenshot}}) |
+| India          | ACT Fibernet   | 2016-09-17 | 2026-11-03 | //blog post//              | yes | ?                                | [[https://shantanugoel.com/2016/09/17/indian-isp-act-fibernet-blocks-bit-ly-does-dns-hijacking/|Indian ISP ACT Fibernet blocks bit.ly. Does DNS Hijacking :: Shantanu Vs The World]] [[https://www.karthihegde.dev/posts/dns_tampering|So my ISP was hijacking my DNS - Karthikey Hegde]] |
 | -              | Level3         | 2015-11-13 | 2019-06-09 | gorbilax on reddit         | no  | NXDOMAIN search engine redir     | [[https://web.archive.org/web/20190609210007/https://www.reddit.com/r/networking/comments/3sm36w/level3_42214222_dns_servers_redirecting_to_search/|Level3 4.2.2.1/4.2.2.2 DNS servers redirecting to search page : networking]], NXDOMAIN redirect to ''23.202.231.167'' and ''23.217.138.108'' on their well-known ''4.2.2.1''-''4.2.2.6'' servers, {{:abusive_isps:level3.txt|proof}} |
 | United States  | T-Mobile US    | 2015-07-20 |            | thefinn93 on reddit        | no  | NXDOMAIN search engine redir     | [[https://web.archive.org/web/20190127174032/https://www.reddit.com/r/tmobile/comments/3dyk1h/how_do_i_turn_of_nxdomain_hijacking/|How do I turn of NXDOMAIN hijacking?]] |