Hier kan je de postcenventies vanaf 1701 met betrekking tot België raadplegen, evenals die van de UPU-congressen.
01.11.1701 Tarief_Brussel – Ruremonde
01.01.1729 Tarif General Des Droits, pour les ports des Lettres & Paquets portès par la voye des Postes
01.01.1749 Belgium, Netherlands, Thurn und Taxes: Depart des Postes a Bruxelles Arrivèe des Postes a Bruxelles
11.07.1832 Belgium – Thurn und Taxis
24.10.1834 Belgium – United Kingdom
16.07.1835 Belgium – France
10.10.1835 Belgium – Thurn und Taxis
27.05.1836 Belgium – France
23.12.1838 Belgium – Thurn und Taxis
06.09.1839 Belgium – Netherlands
10.09.1839 Belgium – Netherlands (Annex)
27.06.1839 Belgium – Luxemburg
24.10.1840 Belgium – Hamburg
27.12.1842 Belgium – Spain
19.10.1844 Belgium – United Kingdom
25.06.1845 Belgium : Mail between the Netherlands and the United Kingdom via Belgium
23.11.1846 Belgium – Prussia
03.11.1847 Belgium – France
17.07.1848 Belgium – Spain
27.04.1849 Belgium – France
12.11.1849 Belgium – Switserland
27.11.1849 Belgium – United Kingdom: additional articles
22.01.1850 Belgium – Luxemburg
26.07.1850 Belgium – Sardinia
17.01.1852 Belgium – Prussia
18.03.1852 Belgium – Netherlands
14.08.1857 Belgium – United Kingdom
21.11.1859 Belgium – USA
06.02.1861 Belgium – Portugal
20.02.1861 Belgium – Spain
23.12.1862 Belgium – Italy
08.05.1863 Belgium – Prussia: additional articles
19.09.1863 Belgium – Thurn und Taxis
20.05.1865 Belgium – United Kingdom: additonal
26.03.1868 Belgium – North German Federation
23.041870 Belgium – Brazil
09.10.1874 UPU convention BERNE
1885 – UPU convention LISBONNE
1891 – UPU convention VIENNE
1897 – UPU convention WASHINGTON
1906 – UPU convention ROME – part I / part II (addenda)
1924 – UPU convention STOCKHOLM
1934 – UPU convention LE CAIRE
1939 – UPU convention BUENOS AIRES
1947 – UPU convention PARIS
1952 – UPU convention BRUXELLES
1957 – UPU convention OTTAWA
1964 – UPU convention VIENNE
1969 – UPU convention TOKYO
1974 – UPU convention LAUSANNE
1979 – UPU convention RIO DE JANEIRO
1984 – UPU convention HAMBURG
1989 – UPU convention WASHINGTON
1994 – UPU convention SEOUL
1999 – UPU convention BEIJING
2004 – UPU convention BUCAREST
2008 – UPU convention GENEVE
2012 – UPU convention DOHA
2016 – UPU convention ISTAMBUL