feat: add country to ContactField, drop placeholder countries, and make finalizeContact idempotent

- Extend `ContactField` union and `REPORTED_FIELDS`/`ADR_INDEX_FIELDS`/`VCARD_PROPERTY_FIELDS` to include `"country"` so RFC 9537 redactions targeting the country field and vCard `adr[6]` are now tracked in `redactedFields`
- Drop placeholder country values (`"N/A"`, `"REDACTED FOR PRIVACY"`, etc.) in `finalizeContact`, but only after confirming the value isn't a real country code or name (e.g. `"NA"` resolves to Namibia and is kept)
- Seed `redactedFields` and `redacted` from the contact's existing values at the start of `finalizeContact` so calling it twice on the same contact produces identical output (idempotent)
- Expand `PLACEHOLDER_VALUE_PATTERNS` to match bare dot sequences (`".."`) and whole-value-only phrases (`"Not Available"`, `"Not Published"`, `"Not Public"`, `"No Data"`) without risk of false-positives on substrings like `"No Data Corp"`
- Export `finalizeContact` and `isPrivacyContact` from the package entry point

src/index.ts

@@ -235,6 +235,7 @@ export async function isRegistered(domain: string, opts?: LookupOptions): Promis
 export const lookupDomain = lookup;
 
 export { getDomainParts, getDomainTld, isLikelyDomain, toRegistrableDomain } from "./lib/domain";
+export { finalizeContact, isPrivacyContact } from "./lib/contacts";
 export { resolveCountry } from "./lib/countries";
 export { isPlaceholderValue, isPrivacyName } from "./lib/privacy";
 export type * from "./types";

src/lib/contacts.test.ts

@@ -57,6 +57,7 @@ test("redactionFields maps RFC 9537 names to contact fields", () => {
   expect(redactionFields("Tech Phone Ext")).toEqual(["phone"]);
   expect(redactionFields("Registrant Street")).toEqual(["street"]);
   expect(redactionFields("Registrant Postal Code")).toEqual(["postalCode"]);
+  expect(redactionFields("Registrant Country")).toEqual(["country"]);
 });
 
 test("redactionFields falls back to the vCard property in prePath", () => {
@@ -67,6 +68,7 @@ test("redactionFields falls back to the vCard property in prePath", () => {
   expect(redactionFields("x", path("org"))).toEqual(["organization"]);
   expect(redactionFields("x", path("tel"))).toEqual(["phone"]);
   expect(redactionFields("x", path("adr", "[3][3]"))).toEqual(["city"]);
+  expect(redactionFields("x", path("adr", "[3][6]"))).toEqual(["country"]);
   expect(redactionFields("x", path("adr"))).toContain("street");
   expect(redactionFields("x", "$.entities[0]")).toEqual([]);
   // The name wins when it identifies fields
@@ -98,3 +100,42 @@ test("package entry exports the contact predicates", () => {
     countryCode: "DE",
   });
 });
+
+test("finalizeContact drops placeholder countries but keeps real ones", () => {
+  const na = finalizeContact({ type: "registrant", country: "N/A" });
+  expect(na.country).toBeUndefined();
+  expect(na.redactedFields).toEqual(["country"]);
+  expect(na.redacted).toBe(true);
+
+  const rp = finalizeContact({ type: "registrant", country: "REDACTED FOR PRIVACY" });
+  expect(rp.country).toBeUndefined();
+  expect(rp.redactedFields).toEqual(["country"]);
+
+  const namibia = finalizeContact({ type: "registrant", country: "NA" });
+  expect(namibia.countryCode).toBe("NA");
+  expect(namibia.country).toBe("Namibia");
+  expect(namibia.redacted).toBeUndefined();
+});
+
+test("finalizeContact treats bare 'not available' style values as placeholders", () => {
+  for (const v of ["Not Available", "Not Published", "Not Public", "No Data", ".."]) {
+    expect(isPlaceholderValue(v)).toBe(true);
+  }
+  expect(isPlaceholderValue("No Data Corp")).toBe(false);
+});
+
+test("finalizeContact is idempotent", () => {
+  const once = finalizeContact({
+    type: "registrant",
+    name: "Domains By Proxy, LLC",
+    email: "REDACTED FOR PRIVACY",
+    country: "N/A",
+  });
+  const twice = finalizeContact(structuredClone(once));
+  expect(twice).toEqual(once);
+});
+
+test("finalizeContact and isPrivacyContact are exported", () => {
+  expect(api.finalizeContact).toBe(finalizeContact);
+  expect(api.isPrivacyContact({ type: "registrant", privacyService: true })).toBe(true);
+});

src/lib/contacts.ts

@@ -1,5 +1,5 @@
 import type { Contact, ContactField } from "../types";
-import { resolveCountry } from "./countries";
+import { countryCodeFromName, resolveCountry } from "./countries";
 import { isPlaceholderValue, isPrivacyName } from "./privacy";
 
 function cleanValue(
@@ -32,6 +32,9 @@ const CLEANED_FIELDS = [
   "poBox",
 ] as const satisfies readonly ContactField[];
 
+// Order in which `redactedFields` is reported: the cleaned fields, then `country` (resolved separately).
+const REPORTED_FIELDS: readonly ContactField[] = [...CLEANED_FIELDS, "country"];
+
 // Secondary fields: cleaned the same way but not reported (no `ContactField` for them).
 const CLEANED_EXTRA = ["organizationUnits", "title", "role"] as const;
 
@@ -42,7 +45,7 @@ const VCARD_PROPERTY_FIELDS: Record<string, ContactField[]> = {
   org: ["organization"],
   email: ["email"],
   tel: ["phone"],
-  adr: ["poBox", "street", "city", "state", "postalCode"],
+  adr: ["poBox", "street", "city", "state", "postalCode", "country"],
 };
 // Position within an `adr` value (`[3][N]`) to the field it holds.
 const ADR_INDEX_FIELDS: Record<number, ContactField> = {
@@ -51,6 +54,7 @@ const ADR_INDEX_FIELDS: Record<number, ContactField> = {
   3: "city",
   4: "state",
   5: "postalCode",
+  6: "country",
 };
 
 function fieldsFromName(text: string): ContactField[] {
@@ -66,6 +70,7 @@ function fieldsFromName(text: string): ContactField[] {
   if (/state|province|region/.test(t)) out.push("state");
   if (/postal|post code|postcode|zip/.test(t)) out.push("postalCode");
   if (/\bpo box\b|\bpobox\b/.test(t)) out.push("poBox");
+  if (/country/.test(t)) out.push("country");
   return out;
 }
 
@@ -101,8 +106,12 @@ export function finalizeContact(
   contact: Contact,
   redactedHint: boolean | ContactField[] = false,
 ): Contact {
-  const redactedFields = new Set<ContactField>();
-  let redacted = redactedHint === true || (Array.isArray(redactedHint) && redactedHint.length > 0);
+  // Seeded from the contact itself so re-finalizing an already-cleaned contact keeps its signals.
+  const redactedFields = new Set<ContactField>(contact.redactedFields);
+  let redacted =
+    !!contact.redacted ||
+    redactedHint === true ||
+    (Array.isArray(redactedHint) && redactedHint.length > 0);
   if (Array.isArray(redactedHint)) for (const f of redactedHint) redactedFields.add(f);
 
   const record = contact as unknown as Record<string, string | string[] | undefined>;
@@ -123,12 +132,22 @@ export function finalizeContact(
     redacted = true;
   }
 
+  // A placeholder country ("N/A", "REDACTED FOR PRIVACY") is dropped, but only when it isn't a
+  // real country: two-letter values like "NA" (Namibia) must resolve first.
+  if (
+    contact.country &&
+    isPlaceholderValue(contact.country) &&
+    !countryCodeFromName(contact.country)
+  ) {
+    contact.country = undefined;
+    redactedFields.add("country");
+  }
   const { country, countryCode } = resolveCountry(contact.country, contact.countryCode);
   contact.country = country;
   contact.countryCode = countryCode;
 
   if (redactedFields.size) {
-    contact.redactedFields = CLEANED_FIELDS.filter((f) => redactedFields.has(f));
+    contact.redactedFields = REPORTED_FIELDS.filter((f) => redactedFields.has(f));
     redacted = true;
   }
   if (redacted) contact.redacted = true;

src/lib/privacy.ts

@@ -84,7 +84,9 @@ const PLACEHOLDER_VALUE_PATTERNS = [
   /\bcontact (?:the )?registrar\b/i,
   /\bnot applicable\b/i,
   /select request email form/i,
-  /^(?:-+|n\/a|na|none|null|undefined|unknown)$/i,
+  /^(?:-+|\.+|n\/a|na|none|null|undefined|unknown)$/i,
+  // Whole-value only: as substrings these could match real text (and would flag names as privacy)
+  /^(?:not available|not published|not public|no data)$/i,
 ];
 
 /** True when a contact field value (email, phone, ...) is a placeholder rather than real data. */

src/types.ts

@@ -109,7 +109,8 @@ export type ContactField =
   | "city"
   | "state"
   | "postalCode"
-  | "poBox";
+  | "poBox"
+  | "country";
 
 /**
  * An RFC 9537 redaction entry describing a field the registry withheld.