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Facebook и WhatsApp недоступны

По всей видимости, проблемы происходят от DNS, обслуживающие зону name servers не отвечают:

$ nslookup
> set querytype=ANY
> facebook.com
Server: 213.133.100.100
Address:	213.133.100.100#53 Non-authoritative answer:
facebook.com	mail exchanger = 10 smtpin.vvv.facebook.com.
facebook.com	nameserver = a.ns.facebook.com.
facebook.com	nameserver = d.ns.facebook.com.
facebook.com	nameserver = c.ns.facebook.com.
facebook.com	nameserver = b.ns.facebook.com. Authoritative answers can be found from:
> a.ns.facebook.com
Server: 213.133.100.100
Address:	213.133.100.100#53 Non-authoritative answer:
Name:	a.ns.facebook.com
Address: 129.134.30.12
Name:	a.ns.facebook.com
Address: 2a03:2880:f0fc:c:face:b00c:0:35 Authoritative answers can be found from:
> www.facebook.com
Server: 213.133.100.100
Address:	213.133.100.100#53 Non-authoritative answer:
www.facebook.com	canonical name = star-mini.c10r.facebook.com. Authoritative answers can be found from:
> star-mini.c10r.facebook.com.
;; Got SERVFAIL reply from 213.133.100.100, trying next server
;; Got SERVFAIL reply from 213.133.99.99, trying next server
Server: 213.133.98.98
Address:	213.133.98.98#53 ** server can't find star-mini.c10r.facebook.com: SERVFAIL
> lserver 129.134.30.12
Default server: 129.134.30.12
Address: 129.134.30.12#53
> facebook.com
;; Connection to 129.134.30.12#53(129.134.30.12) for facebook.com failed: timed out.
;; Connection to 129.134.30.12#53(129.134.30.12) for facebook.com failed: timed out.
;; connection timed out; no servers could be reached ;; Connection to 129.134.30.12#53(129.134.30.12) for facebook.com failed: timed out.

Источник: habr.com

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