Here's a few from Rugbydata, but some are obviously missing, including Kenya 100 Tunisia 10, & Guatemala 114 El Salvador 0 this year alone . . .
09 Sep 2003 Rwanda 9 - 107 Zambia
18 May 1994 Portugal 11 - 102 Wales Universitario Lisboa
Lisbon, Portugal
01 May 2004 Argentina 147 - 7 Venezuela Prince of Wales Country Club
Santiago, Chile
11 Jun 2005 South Africa 134 - 3 Uruguay Basil Kenyon Stadium
East London, South Africa
02 Nov 2003 England 111 - 13 Uruguay Lang Park
Brisbane, Australia
14 May 2011 Paraguay 6 - 102 Uruguay
21 Aug 1999 England 106 - 8 United States Twickenham
London, England
05 May 2012 Japan 106 - 3 United Arab Emirates
11 Sep 2003 Burundi 0 - 100 Uganda Lusaka
Lusaka, Zambia
16 Jun 2000 New Zealand 102 - 0 Tonga North Harbour
15 Oct 1999 England 101 - 10 Tonga Twickenham
London, England
05 May 2001 Luxembourg 3 - 116 Sweden Cessange
Cessange, Luxembourg
21 Jun 2014 Mauritius 134 - 0 Swaziland
10 May 2014 Japan 132 - 10 Sri Lanka
09 Oct 2002 Japan 129 - 6 Sri Lanka
21 Aug 1969 Fiji 113 - 13 Solomon Islands Army Barracks
Port Moresby, Papua New Guinea
27 Oct 1994 Hong Kong 164 - 13 Singapore Petaling Jaya Stadium
Kuala Lumpur, Malaysia
12 Nov 2005 Germany 108 - 0 Serbia & Montenegro Heidelburg
Heidelburg, Germany
03 Sep 2008 New Zealand 101 - 14 Samoa Yarrow Stadium
New Plymouth, New Zealand
13 May 2000 Denmark 7 - 104 Russia
17 Nov 2001 England 134 - 0 Romania Twickenham
London, England
21 Sep 1976 Bulgaria 0 - 100 Romania Burgas
Burgas, Bulgaria
02 Jul 1976 Bulgaria 0 - 100 Romania
15 Sep 2007 New Zealand 108 - 13 Portugal Stade Gerland
Lyon, France
20 Apr 2013 Japan 121 - 0 Philippines
26 Apr 2014 Hong Kong 108 - 0 Philippines
02 Jul 2008 Brunei 0 - 101 Philippines
01 May 2002 Argentina 152 - 0 Paraguay Mendoza
Mendoza, Argentina
27 Apr 2003 Argentina 144 - 0 Paraguay Defensor SC
Montevideo, Uruguay
03 May 2003 Chile 102 - 0 Paraguay Defensor SC
Montevideo, Uruguay
11 Jul 2009 Samoa 115 - 7 Papua New Guinea
11 Sep 1983 Fiji 124 - 4 Niue Apia Park
Apia, Samoa
01 Aug 1987 Zimbabwe 111 - 12 Nigeria Nairobi
Nairobi, Kenya
04 Jun 1995 Japan 17 - 145 New Zealand Vodacom Park
Bloemfontein, South Africa
14 Nov 1998 England 110 - 0 Netherlands McAlpine Stadium
Huddersfield, England
25 Oct 2003 Australia 142 - 0 Namibia Adelaide Oval
Adelaide, Australia
15 Aug 2007 South Africa 105 - 13 Namibia Newlands
Cape Town, South Africa
05 Nov 1996 Korea 112 - 5 Malaysia
03 Nov 1996 Hong Kong 103 - 5 Malaysia
12 Nov 1988 Korea 102 - 0 Malaysia
5 Jun 2002 Namibia 116 - 0 Madagascar Windhoek
Windhoek, Namibia
22 Mar 2003 Tonga 119 - 0 Korea Teufaiva
Nuku Alofa, Tonga
15 May 2010 Japan 101 - 7 Kazakhstan
13 Nov 2004 Scotland 100 - 8 Japan McDiarmid Park
Perth, Scotland
21 Jul 2002 Chinese Taipei 3 - 120 Japan Tainan
Tainan, Chinese Taipei
13 May 2011 United Arab Emirates 0 - 111 Japan
14 Oct 1999 New Zealand 101 - 3 Italy McAlpine Stadium
Huddersfield, England
19 Jun 1999 South Africa 101 - 0 Italy ABSA Stadium
Durban, South Africa
09 Nov 1996 Chinese Taipei 12 - 114 Hong Kong
10 Oct 1987 Denmark 100 - 0 Finland Eskilstuna
Eskilstuna, Sweden
18 May 1994 Italy 104 - 8 Czech Republic Viadana
Viadana, Italy
28 Jun 2014 Fiji 108 - 6 Cook Islands
07 Jul 2002 Japan 155 - 3 Chinese Taipei Chichibu Stadium
Tokyo, Japan
27 Oct 1998 Japan 134 - 6 Chinese Taipei Singapore
Singapore, Singapore
30 Jun 2002 Korea 119 - 7 Chinese Taipei Seoul
Seoul, Korea
09 Sep 2006 Korea 100 - 3 China Oryu Stadium
Seoul, Korea
10 Dec 2005 Mauritius 108 - 3 Burkina Faso
23 May 2012 Argentina 111 - 0 Brazil Mahuida Parque Reina
Santiago, Chile
09 Oct 1979 Argentina 109 - 3 Brazil Prince of Wales Country Club
Santiago, Chile
08 Oct 1989 Argentina 103 - 9 Brazil Montevideo
Montevideo, Uruguay
07 Sep 1996 Zimbabwe 130 - 10 Botswana Bulawayo
Bulawayo, Zimbabwe
24 Sep 1995 Paraguay 9 - 103 Argentina Asuncion
Asuncion, Paraguay
02 Oct 1993 Brazil 3 - 114 Argentina San Pablo
San Pablo, Brazil
21 Sep 1985 Paraguay 3 - 102 Argentina Asuncion
Asuncion, Paraguay
03 May 2008 Japan 114 - 6 Arabian Gulf
http://www.rugbydata.com/centuries/