  The search for detection of gamma-rays from distant AGNs by Imaging
Atmospheric Cherenkov Telescopes (IACTs) is challenging at high redshifts, not
only because of lower flux due to the distance of the source, but also due to
the consequent absorption of gamma-rays by the extragalactic background light
(EBL). Before the MAGIC discoveries reported in this work, the farthest source
ever detected in the VHE domain was the blazar PKS 1424+240, at z>0.6. MAGIC, a
system of two 17 m of diameter IACTs located in the Canary island of La Palma,
has been able to go beyond that limit and push the boundaries for VHE detection
to redshifts z~ 1. The two sources detected and analyzed, the blazar QSO
B0218+357 and the FSRQ PKS 1441+25 are located at redshift z=0.944 and z=0.939
respectively. QSO B0218+357 is also the first gravitational lensed blazar ever
detected in VHE. The activity, triggered by Fermi-LAT in high energy
gamma-rays, was followed up by other instruments, such as the KVA telescope in
the optical band and the Swift-XRT in X-rays. In the present work we show
results on MAGIC analysis on QSO B0218+357 and PKS 1441+25 together with
multiwavelength lightcurves. The collected dataset allowed us to test for the
first time the present generation of EBL models at such distances.
