Country Calling Codes
Calling codes, phone analysis, dialing guidance, batch normalization and calling windows.
| Endpoint | https://www.countrycalling.codes/api/mcp (streamable-http) |
|---|---|
| Registry version | 1.4.0 |
| Now | 11 tools · grade A (92) · pin ts_257ec73f45c033d79693940c864d3c7c · protocol 2025-06-18 |
| First / last listed | 2026-10-26 01:13 UTC / 2026-10-26 01:13 UTC |
| Grade over time | 2026-10-26: A (92), 11 tools |
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Tools: get_phone_capabilities analyze_phone_number get_dialing_instructions normalize_phone_numbers compare_phone_numbers resolve_phone_region get_phone_input_rules diagnose_dialing_problem find_calling_windows lookup_country_calling_code format_international_phone_number
get_phone_capabilities | Discover supported countries, per-operation review coverage, evidence, dataset versions and request limits before choosing a phone workflow. params: countryCode, operation |
analyze_phone_number | Analyze a number using versioned numbering metadata. National numbers need numberCountryCode; exit prefixes need originCountryCode. Reports uncertainty and rule evidence, never live subscriber status. params: phoneNumber*, numberCountryCode, originCountryCode, detail |
get_dialing_instructions | Prepare origin-specific dialing guidance for reviewed countries. Provide origin and destination separately; no phone number returns safe placeholder patterns. Network-dependent results remain conditional. params: originCountryCode*, destinationCountryCode*, phoneNumber, device, carrierSelectionCode, detail |
normalize_phone_numbers | Normalize up to 100 records with unique IDs. Invalid records produce individual errors. Optionally identify canonical duplicate candidates; no contacts are changed or stored. params: none |
compare_phone_numbers | Compare two numbers after analysis. Missing context produces indeterminate. Extensions must match unless extensionPolicy is explicitly ignore; equality does not establish ownership. params: left*, right*, extensionPolicy |
resolve_phone_region | Resolve a phone number to metadata-backed country candidates or non-geographic numbering. Results are numbering assignments, not current location or carrier. params: phoneNumber*, numberCountryCode, originCountryCode, detail |
get_phone_input_rules | Get reviewed display placeholders and trunk-prefix guidance. Examples are not validation masks. English fallback and unsupported editorial coverage are explicit. params: countryCode*, locale |
diagnose_dialing_problem | Explain formatting issues and propose reviewed prefix repairs for confirmation. Uses the same analyzer. Cannot determine why a network rejected a call. params: phoneNumber*, numberCountryCode, originCountryCode, detail, destinationCountryCode, symptom, device |
find_calling_windows | Find overlapping working hours using explicit IANA time zones and dates. Handles overnight shifts and DST; never infers location from phone numbers or contacts participants. params: none |
lookup_country_calling_code | Look up international country calling codes by free text, ISO code, dial code, or region. Optionally return reviewed, source-linked dialing examples. This tool does not verify live subscriber numbers. params: q, code, dialCode, region, limit, includeExamples |
format_international_phone_number | Normalize a phone number into a plausible international format using reviewed country-specific rules. Processing is ephemeral. This tool does not query carriers, HLR/HSS, MNP databases, or live subscribers. params: phoneNumber*, countryCode |
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