I compared the teams with tests vs current rankings. The top teams that *don't* have tests (according to your link):
Rank - Country
20 - Namibia
22 - Kenya
[Strike]24 - Belgium[/Strike]
28 - Ukraine*
31-35 - Switzerland*, Czechia**, Moldova*, Poland, Netherlands*
(15th-19th in Europe)
38 - Tunisia. (below Tunisia, only PNG has tests)
That really makes your point I think. Most teams have full test matches or the Cup of Nations.
Out of the top 14 teams in Europe (down to Portugal), only [Strike]Belgium and[/Strike] Ukraine doesn't. Out of the top 18 teams outside Europe (down to Brazil and Zimbabwe), only Namibia and Kenya don't.
Tournaments between lower ranked countries usually fly under the radar. I think there's always been 4 teams go to Hong Kong, and another 4 in Romania (but not necessarily all full national teams). 29 have inter-continental matches. Including Rugby Europe matches, from Oct 22 to Dec 1,
51 countries have full international matches.
[UPDATE: And Asia Rugby Championship Division 3 East is on Nov 2-5 as well - India, Laos, China and Brunei][NEW UPDATE: And Portugal vs Belgium, Senegal vs Tunisia, Colombia vs Mexico and then the winner vs Paraguay - so 61 countries!]
* - These countries have Rugby Europe Trophy matches during this period.
** - Czechia has a match vs Barbarians (according to wiki), and has a Rugby Europe Conference match in this period, as do: Country (Rank in Europe)
Lithuania (20th in Europe, 46th in the world), Latvia (22), Croatia (23), Luxembourg (24), Sweden (25), Israel (27), Slovenia (28), Serbia (30), Austria (32), Cyprus (NR), Turkey (NR).
On Oct 29 Malta (21) and Andorra (26) each have a match.
On Oct 22 as well as NZ vs Aus (which Wikipedia includes in their list of AI's) there is Denmark (33) vs Norway (34), and Finland (36) vs Estonia (NR).
European countries with no tests or matches between Oct 22 and Dec 1: [strike]Belgium (11),[/strike] Poland (18), Bosnia & Herzegovina (29), Hungary (31st in Europe, 82nd in the world)
BTW what's your source re the Cook Islands? World Rugby doesn't have any fixtures listed.
So 29 countries with full inter-continental matches in 2016. Comparing to past years...
2013 also had 29 *if* you include Senegal and Ivory coast, who only had one match - against each other, but the match was held in France. Does that make it inter-continental? I'm gonna go with no.
2010 had 28 with scheduled matches, but the Netherlands' only game was cancelled, and the matches were ridiculously spread out (Sep 29 - Dec 18).
Looking further back, I'm pretty sure nothing even comes close.
So then, 2016 is indeed a record, if not an explosion.