@xyz/whois/src/utils/patterns/registrar.ts

A powerful TypeScript/JavaScript tool for comprehensive domain analysis, featuring detailed WHOIS data with registration dates, registrars, and domain status. Offers SSL certificate extraction (with PEM support), DNS records, and server details. Includes

export const REGISTRAR_PATTERNS = [
  /Registrar:\s*(.+?)(?:\n|$)/i,
  /Registrar Name:\s*(.+?)(?:\n|$)/i,
  /Sponsoring Registrar:\s*(.+?)(?:\n|$)/i,
  /Registration Service Provider:\s*(.+?)(?:\n|$)/i,
];

export const URL_PATTERNS = [
  /Registrar URL:\s*(.+?)(?:\n|$)/i,
  /URL:\s*(.+?)(?:\n|$)/i,
  /Registrar Website:\s*(.+?)(?:\n|$)/i,
];

export const IANA_ID_PATTERN = /Registrar IANA ID:\s*(.+?)(?:\n|$)/i;

export function findRegistrar(rawData: string): string | undefined {
  for (const pattern of REGISTRAR_PATTERNS) {
    const match = rawData.match(pattern);
    if (match && match[1].trim()) {
      return match[1].trim();
    }
  }

  // Special case for MarkMonitor
  if (rawData.includes('MarkMonitor')) {
    return 'MarkMonitor Inc.';
  }

  // Try to extract from any line that has "Registrar:" followed by text on the same line
  const lines = rawData.split('\n');
  for (const line of lines) {
    if (
      line.includes('Registrar:') &&
      !line.includes('WHOIS Server') &&
      !line.includes('URL') &&
      !line.includes('IANA ID')
    ) {
      const parts = line.split('Registrar:');
      if (parts.length > 1 && parts[1].trim()) {
        return parts[1].trim();
      }
    }
  }

  return undefined;
}

export function findRegistrarUrl(rawData: string): string | undefined {
  for (const pattern of URL_PATTERNS) {
    const match = rawData.match(pattern);
    if (match && match[1].trim()) {
      return match[1].trim();
    }
  }
  return undefined;
}

export function findRegistrarIanaId(rawData: string): string | undefined {
  const match = rawData.match(IANA_ID_PATTERN);
  if (match && match[1].trim()) {
    return match[1].trim();
  }
  return undefined;
}