GeoIP City provides a mapping from IP address to location (including coordinates). For instance:
>>> gi = pygeoip.GeoIP('GeoIPCity.dat')
>>> gi.record_by_addr('64.233.161.99')
{
'city': u'Mountain View',
'region_code': u'CA',
'area_code': 650,
'time_zone': 'America/Los_Angeles',
'dma_code': 807,
'metro_code': 'San Francisco, CA',
'country_code3': 'USA',
'latitude': 37.41919999999999,
'postal_code': u'94043',
'longitude': -122.0574,
'country_code': 'US',
'country_name': 'United States',
'continent': 'NA'
}
>>> gi.time_zone_by_addr('64.233.161.99')
'America/Los_Angeles'
However, it does not provide a mapping from region code to coordinates. For this, I would recommend using GeoNames.