Inside of your Magento installation you can look at the Models of the
the Shipping Methods provided.
I am not so sure about DHL, FedEx, UPS, and USPS because I don't use
them, but the other shipping methods I am quite sure of.
app/code/core/Mage/Usa/Model/Shipping/Carrier/
* Dhl.php line 45
o const CODE = 'dhl';
o *Magento Carrier Code: dhl*
* Fedex.php line 44
o const CODE = 'fedex';
o *Magento Carrier Code: fedex*
* Ups.php line 45
o const CODE = 'ups';
o *Magento Carrier Code: ups*
* Usps.php line 67
o
o const CODE = 'usps';
o *Magento Carrier Code: usps*
app/code/core/Mage/Shipping/Model/Carrier/
* Flatrate.php
o Line 40: protected $_code = 'flatrate';
o Line 93: $method->setMethod('flatrate');
o *Magento Carrier Code: flatrate_flatrate*
* Freeshipping.php
o Line 45: protected $_code = 'freeshipping';
o Line 79: $method->setMethod('freeshipping');
o *Magento Carrier Code: freeshipping_freeshipping*
* Pickup.php
o Line 33: protected $_code = 'pickup';
o Line 56: $method->setMethod('store');
o *Magento Carrier Code: pickup_store*
* Tablerate.php
o Line 40: protected $_code = 'tablerate';
o Line 157: $method->setMethod('bestway');
o *Magento Carrier Code: tablerate_bestway*
Cheers,
Dylan
