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I was checking the list of MCC (Mobile Country Codes) on Wikipedia and found that India has two MCC: 404 and 405. 404 contains only GSM/UMTS/LTE operator bands and 405 contains both GSM/UMTS/LTE and CDMA operator bands. The problem is that I do not understand the reason for having 2 MCC for the same country. We also have mobile network code (MNC) to differentiate between various operators, circles and the bands.

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    $\begingroup$ This question may be related to technology, but it doesn't address any engineering concerns. $\endgroup$ – Fred Jun 13 '17 at 16:34
  • $\begingroup$ @Fred maybe the question is not strictly about engineering, but a bit of Google-fu soon found a plausible answer. $\endgroup$ – alephzero Jun 13 '17 at 17:41
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The Mobile Network Code (MNC) is either a two digit ("European" standard) or three digit ("North American" standard) identifier, with in the Mobile Country Code (MCC).

According to https://en.wikipedia.org/wiki/International_mobile_subscriber_identity, the 3GPP specification 23.003 recommends that the "length of the MNC is uniform within a given MCC area".

Looking at the OP's link, presumably India was allocated MCC = 404 and started using two-digit MNC numbers, but then came close to running out of numbers. The additional MCC = 405 has blocks of three-digit numbers as well as two-digit, so they may be unlikely to ever need another MCC allocation.

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  • $\begingroup$ @Fred looks like you got beaten to the post.... $\endgroup$ – Solar Mike Jun 13 '17 at 20:04
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Two codes to provide sufficient bandwidth springs to mind.

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    $\begingroup$ As it stands this answer is more of a comment. More detail would improve this answer. $\endgroup$ – Fred Jun 13 '17 at 16:30
  • $\begingroup$ @Fred go ahead then. $\endgroup$ – Solar Mike Jun 13 '17 at 16:36

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