Roaming client monitoring systems and methods

A non-transitory computer-readable storage medium having computer-executable instructions stored thereon that, when executed by at least one processor, cause the at least one processor to cause operations to be performed, the operations including:

• receiving, by a mobile operator of at least a fifth generation HPLMN, a first API response to a first KPI API call that specifies a number of home subscribers registered with a first NF of the HPLMN and a second API response to a second KPI API call that specifies a total number of subscribers registered with a second and distinct NF of the HPLMN such that the total number of subscribers includes both home subscribers and roaming subscribers that are roaming on a VPLMN;
• computing, by the mobile operator, a ratio of home subscribers to total subscribers by comparing the number of home subscribers registered with the first NF as indicated by the first API response to the total number of subscribers registered with the second and distinct NF as indicated by the second API response such that the ratio represents a percentage of subscribers that are home subscribers;
• performing, by the mobile operator in response to a determination that the ratio satisfies a predetermined threshold, a remediation action that resolves an alert resulting from an elevated number of roaming subscribers registered with the second and distinct NF as indicated by the ratio satisfying the predetermined threshold.

A system comprising:

• at least one memory that stores computer executable instructions;
• and
• at least one processor that executes the computer executable instructions to cause operations to be performed, the operations including:
• receiving, by a mobile operator of at least a fifth generation HPLMN, a first API response to a first KPI API call that specifies a number of home subscribers registered with a first NF of the HPLMN and a second API response to a second KPI API call that specifies a total number of subscribers registered with a second and distinct NF of the HPLMN such that the total number of subscribers includes both home subscribers and roaming subscribers that are roaming on a VPLMN;
• computing, by the mobile operator, a ratio of home subscribers to total subscribers by comparing the number of home subscribers registered with the first NF as indicated by the first API response to the total number of subscribers registered with the second and distinct NF as indicated by the second API response such that the ratio represents a percentage of subscribers that are home subscribers;
• performing, by the mobile operator in response to a determination that the ratio satisfies a predetermined threshold, a remediation action that resolves an alert resulting from an elevated number of roaming subscribers registered with the second and distinct NF as indicated by the ratio satisfying the predetermined threshold.