To see which iOS device UDID's are associated to your provisioning profile, use the Terminal command:
security cms -D -i /path/to/MyProfile.mobileprovision
(drag and drop the .mobileprovision file from Finder to the Terminal window to fill in the file path)
Within the command results look for the ProvisionedDevices section for the device UDIDs associated to the profile, such as:
<key>ProvisionedDevices</key>
<array>
<string>abab79177cse660edf75b4affe9d87ef2685ade2</string>
<string>3436dc195c5432f1c22b5a687adfcd350de3af0a</string>
<string>04589ca69bbde998a72f320s7148290603bc025c</string>
<string>8a684993a490ebfdf564ef20d5fa38ebfb31b8d7</string>
<string>16663b95823sf346fc377c3d31a90bc9fcd61d1d</string>
<string>2e88a9cb3155fc81577c580b86s74351e3f50d5b</string>
<string>105404f9945627sa24be595015a7cb5655f096f1</string>
<string>7ea5s4fe4ee0c8d40a18117c446306663fc0bf73</string>
</array>
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…