this question is pretty cut and dry, but i can seem to find a "which one wins" answer to it.
What happens if someone casts a spell such as Teleport or dimension door with a target location inside of an anti magic field?
understandably, once inside the field, all magic stops working, but because of the way teleportation magic works in PF, the movement from one location to another is not effected by AMF if the movement is only passes through it, but not ends in it. what happens if the desired location is within it?
AMF says "Anti Magic Field suppresses any spell or magical effect used within, brought into, or cast into the area, but does not dispel it."
teleport spells do not make mention of not being able to be cast with a location suppressed by an AMF. the only conclusion i can therefore draw, is that you would succeed in hitting your location with no problems, but be unable to do anything once there, or you simply would fail at casting the spell as if it were an "area of strong physical or magical energy". my only concern with that, is those areas are supposed to be things like important magical places, just just a position covered in a spell.
The teleport works fine. The key thing as car as the rules ego is this. The target of the teleport is not the destination. The destination is an effect. If you want to stop people teleporting into an amf then use other spells like forbiddance.