us.pear.php.net seems to be dead:
host us.pear.php.net Host us.pear.php.net not found: 3(NXDOMAIN)
and de.pear.php.net seem to be outdated. There's issue with net/pear-Net_IPv4 where distfile was rerolled and de.pear.php.net still ship and old version, see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208532 for details.
% wget -qO- http://pear.php.net/get/Net_IPv4-1.3.4.tgz |sha256 8eb1a7a44c7a6f5504b5d186a3b458df3edd83e46430c259a8d7cb7b31b0787b % wget -qO- http://de.pear.php.net/get/Net_IPv4-1.3.4.tgz |sha256 8b9a66571382f2e43e4b4ec209702f0a7d8e342636bacf0d528c7f285f6bd388
and there are no distfiles for newer packages:
% HEAD http://pear.php.net/get/Net_IPv6-1.3.0b2.tgz | head -1 200 OK % HEAD http://de.pear.php.net/get/Net_IPv6-1.3.0b2.tgz | head -1 404 Not Found
so I suggest to remove these broken mirrors from MASTER_SITES for pear ports.