mail DOT aol DOT com is inaccesable using 1.1.1.2 or 1.1.1.3, but is with 1.1.1.1
dig mail.aol.com @1.1.1.1
; <<>> DiG 9.16.1-Ubuntu <<>> mail.aol.com @1.1.1.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18311
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;mail.aol.com. IN A
;; ANSWER SECTION:
mail.aol.com. 15 IN CNAME geoycpi-uno.gycpi.b.yahoodns.net.
geoycpi-uno.gycpi.b.yahoodns.net. 255 IN A 69.147.64.34
geoycpi-uno.gycpi.b.yahoodns.net. 255 IN A 69.147.64.33
;; Query time: 19 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Sun Jul 19 11:48:51 CDT 2020
;; MSG SIZE rcvd: 131
dig mail.aol.com @1.1.1.2
; <<>> DiG 9.16.1-Ubuntu <<>> mail.aol.com @1.1.1.2
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45679
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;mail.aol.com. IN A
;; ANSWER SECTION:
mail.aol.com. 22 IN CNAME geoycpi-uno.gycpi.b.yahoodns.net.
geoycpi-uno.gycpi.b.yahoodns.net. 60 IN A 0.0.0.0
;; Query time: 19 msec
;; SERVER: 1.1.1.2#53(1.1.1.2)
;; WHEN: Sun Jul 19 11:49:47 CDT 2020
;; MSG SIZE rcvd: 115