Can't access Twitter, PSN is down, many pages have elements missing, is something wrong?

[#1]

This really doesn't seem to be on my end.  It began happening around half an hour ago.  It's affecting multiple devices (computer, PS4, Amazon Fire box, phones, etc.).  First I became aware of it was when I couldn't play multiplayer on PS4 because PSN is inaccessible.  I check Twitter to see if anyone is complaining but Twitter (or all sites!) is inaccessible.

I'm getting DNS errors.  I switched from Google to Plusnet servers DNS.  Rebooted absolutely everything (router AND all devices connected to it).  No different.  Same message.  Switched back to Google DNS.  Rebooted everything again.  No difference.  Even doing a tracert from command line, "Unable to resolve target system name twitter.com".

But bbc.co.uk works fine.  As does guardian.co.uk, dailymail.co.uk, etc.

As I type this message, Twitter has sort of semi-come-back.  Text is loading but no graphics.  

Anyone else experiencing this weirdness?

[#2]

Yep same here.  Twitter borked.  www.ancestry.co.uk also borked.

[#3]

I've since discovered that there's a DDOS attack taking place against Dyn, a DNS company which many well known American sites are reliant upon.  Check out the list of sites known to be affected.  It's crazy.

[#4]

IS or Putin