Added Dns Lookup

apps/backend/app/api/router.py

@@ -20,6 +20,7 @@
 from app.api.routes.feedback.api import router as feedback_router
 from app.api.routes.redis_commander.api import router as redis_commander_router
 from app.api.routes.url_shortener.api import router as url_shortener_router
+from app.api.routes.dns_lookup.api import router as dns_lookup_router
 
 api_router = APIRouter()
 api_router.include_router(health_router)
@@ -42,3 +43,4 @@
 api_router.include_router(feedback_router)
 api_router.include_router(redis_commander_router)
 api_router.include_router(url_shortener_router)
+api_router.include_router(dns_lookup_router)

apps/backend/app/api/routes/dns_lookup/api.py

@@ -0,0 +1,17 @@
+from fastapi import APIRouter, Query
+
+from app.api.routes.dns_lookup import services as svc
+from app.api.routes.dns_lookup.schema import DNSLookupResult
+
+router = APIRouter(prefix="/dns-lookup", tags=["dns-lookup"])
+
+
+@router.get("/lookup", response_model=DNSLookupResult, summary="Perform DNS lookup for a domain")
+async def lookup(
+    domain: str = Query(..., description="Domain name to look up"),
+    record_types: list[str] = Query(
+        default=["A", "AAAA", "MX", "TXT", "NS", "CNAME"],
+        description="DNS record types to query",
+    ),
+) -> DNSLookupResult:
+    return await svc.lookup_domain(domain, record_types)

apps/backend/app/api/routes/dns_lookup/schema.py

@@ -0,0 +1,16 @@
+from typing import Any
+from pydantic import BaseModel
+
+
+class DNSRecord(BaseModel):
+    type: str
+    value: str
+    ttl: int | None = None
+    priority: int | None = None
+    extra: dict[str, Any] | None = None
+
+
+class DNSLookupResult(BaseModel):
+    domain: str
+    records: dict[str, list[DNSRecord]]
+    errors: dict[str, str] = {}

apps/backend/app/api/routes/dns_lookup/services.py

@@ -0,0 +1,105 @@
+import asyncio
+import re
+from typing import Any
+
+import dns.asyncresolver
+import dns.exception
+import dns.rdatatype
+import dns.resolver
+
+from app.api.routes.dns_lookup.schema import DNSLookupResult, DNSRecord
+
+VALID_RECORD_TYPES = {"A", "AAAA", "MX", "TXT", "NS", "CNAME", "SOA", "CAA", "PTR"}
+_DOMAIN_RE = re.compile(r"^(?:[a-zA-Z0-9](?:[a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$")
+
+
+def _is_valid_domain(domain: str) -> bool:
+    return bool(_DOMAIN_RE.match(domain)) and len(domain) <= 253
+
+
+async def _resolve_type(resolver: dns.asyncresolver.Resolver, domain: str, rtype: str) -> tuple[list[DNSRecord], str | None]:
+    try:
+        answers = await resolver.resolve(domain, rtype, raise_on_no_answer=False)
+        if answers.rrset is None:
+            return [], None
+        ttl = answers.rrset.ttl
+        records: list[DNSRecord] = []
+        for rdata in answers.rrset:
+            rec = _parse_rdata(rtype, rdata, ttl)
+            if rec:
+                records.append(rec)
+        return records, None
+    except dns.resolver.NXDOMAIN:
+        return [], "NXDOMAIN: Domain does not exist"
+    except dns.resolver.NoNameservers:
+        return [], "No nameservers available"
+    except dns.resolver.Timeout:
+        return [], "Query timed out"
+    except dns.exception.DNSException as exc:
+        return [], str(exc)
+
+
+def _parse_rdata(rtype: str, rdata: Any, ttl: int) -> DNSRecord | None:
+    if rtype == "A":
+        return DNSRecord(type=rtype, value=str(rdata.address), ttl=ttl)
+    if rtype == "AAAA":
+        return DNSRecord(type=rtype, value=str(rdata.address), ttl=ttl)
+    if rtype == "MX":
+        return DNSRecord(type=rtype, value=str(rdata.exchange).rstrip("."), ttl=ttl, priority=rdata.preference)
+    if rtype == "TXT":
+        value = " ".join(part.decode("utf-8", errors="replace") for part in rdata.strings)
+        return DNSRecord(type=rtype, value=value, ttl=ttl)
+    if rtype == "NS":
+        return DNSRecord(type=rtype, value=str(rdata.target).rstrip("."), ttl=ttl)
+    if rtype == "CNAME":
+        return DNSRecord(type=rtype, value=str(rdata.target).rstrip("."), ttl=ttl)
+    if rtype == "SOA":
+        return DNSRecord(
+            type=rtype,
+            value=str(rdata.mname).rstrip("."),
+            ttl=ttl,
+            extra={
+                "rname": str(rdata.rname).rstrip("."),
+                "serial": rdata.serial,
+                "refresh": rdata.refresh,
+                "retry": rdata.retry,
+                "expire": rdata.expire,
+                "minimum": rdata.minimum,
+            },
+        )
+    if rtype == "CAA":
+        tag = rdata.tag.decode("utf-8", errors="replace") if isinstance(rdata.tag, bytes) else rdata.tag
+        value = rdata.value.decode("utf-8", errors="replace") if isinstance(rdata.value, bytes) else rdata.value
+        return DNSRecord(type=rtype, value=f'{rdata.flags} {tag} "{value}"', ttl=ttl)
+    if rtype == "PTR":
+        return DNSRecord(type=rtype, value=str(rdata.target).rstrip("."), ttl=ttl)
+    return DNSRecord(type=rtype, value=str(rdata), ttl=ttl)
+
+
+async def lookup_domain(domain: str, record_types: list[str]) -> DNSLookupResult:
+    domain = domain.strip().lower().rstrip(".")
+    if not _is_valid_domain(domain):
+        return DNSLookupResult(domain=domain, records={}, errors={"_": "Invalid domain name"})
+
+    requested = [rt.upper() for rt in record_types if rt.upper() in VALID_RECORD_TYPES]
+    if not requested:
+        requested = ["A", "AAAA", "MX", "TXT", "NS", "CNAME"]
+
+    resolver = dns.asyncresolver.Resolver()
+    resolver.timeout = 5
+    resolver.lifetime = 10
+
+    tasks = {rtype: _resolve_type(resolver, domain, rtype) for rtype in requested}
+    results = await asyncio.gather(*tasks.values())
+
+    records: dict[str, list[DNSRecord]] = {}
+    errors: dict[str, str] = {}
+    for rtype, (recs, err) in zip(tasks.keys(), results):
+        if err and rtype == requested[0] and "NXDOMAIN" in err:
+            return DNSLookupResult(domain=domain, records={}, errors={"_": err})
+        if err:
+            errors[rtype] = err
+        else:
+            records[rtype] = recs
+
+    return DNSLookupResult(domain=domain, records=records, errors=errors)

apps/web/messages/af.json

@@ -282,6 +282,10 @@
         "title": "Sertifikaat / PEM-dekodeerder",
         "description": "Dekodeer X.509-sertifikate en CSRs: onderwerp, uitreiker, geldigheid, SANs."
       },
+      "sshKeyGenerator": {
+        "title": "SSH / RSA-sleutelgenerator",
+        "description": "Genereer Ed25519- of RSA-sleutelpare in die blaaier. Laai af in OpenSSH- en PEM-formaat."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "IP-/subnetrekenaar",
         "description": "IPv4 en IPv6 CIDR: netmasker, reekse en adresse."
       },
+      "dnsLookup": {
+        "title": "DNS-soektog",
+        "description": "Navraag DNS-rekords vir enige domein — A, AAAA, MX, TXT, NS, CNAME."
+      },
       "hashGenerator": {
         "title": "Hash-generator",
         "description": "MD5, SHA-1 en SHA-2 vir teks of lêers."

apps/web/messages/ar.json

@@ -282,6 +282,10 @@
         "title": "فك ترميز الشهادة / PEM",
         "description": "فك ترميز شهادات X.509 وطلبات CSR: الموضوع، المصدر، الصلاحية، وأسماء SAN."
       },
+      "sshKeyGenerator": {
+        "title": "مولد مفاتيح SSH / RSA",
+        "description": "توليد أزواج مفاتيح Ed25519 أو RSA في المتصفح. التنزيل بتنسيقات OpenSSH و PEM."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "حاسبة IP / الشبكة الفرعية",
         "description": "IPv4 وIPv6 CIDR: قناع الشبكة، النطاقات، وعدد العناوين."
       },
+      "dnsLookup": {
+        "title": "بحث DNS",
+        "description": "استعلام عن سجلات DNS لأي نطاق — A، AAAA، MX، TXT، NS، CNAME."
+      },
       "hashGenerator": {
         "title": "مُولّد الهاش",
         "description": "MD5 وSHA-1 وSHA-2 لنص أو ملفات."

apps/web/messages/ca.json

@@ -282,6 +282,10 @@
         "title": "Descodificador de certificats / PEM",
         "description": "Descodifica certificats X.509 i CSR: subjecte, emissor, validesa i SAN."
       },
+      "sshKeyGenerator": {
+        "title": "Generador de claus SSH / RSA",
+        "description": "Genereu parells de claus Ed25519 o RSA al navegador. Descarregueu en formats OpenSSH i PEM."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "Calculadora IP / subxarxa",
         "description": "IPv4 i IPv6 CIDR: màscara, intervals i recompte d’adreces."
       },
+      "dnsLookup": {
+        "title": "Cerca DNS",
+        "description": "Consulta els registres DNS de qualsevol domini — A, AAAA, MX, TXT, NS, CNAME."
+      },
       "hashGenerator": {
         "title": "Generador de hash",
         "description": "MD5, SHA-1 i SHA-2 per a text o fitxers."

apps/web/messages/cs.json

@@ -282,6 +282,10 @@
         "title": "Dekodér certifikátů / PEM",
         "description": "Dekódujte certifikáty X.509 a CSR: subjekt, vydavatel, platnost a SAN."
       },
+      "sshKeyGenerator": {
+        "title": "Generátor klíčů SSH / RSA",
+        "description": "Generujte páry klíčů Ed25519 nebo RSA v prohlížeči. Stáhněte ve formátech OpenSSH a PEM."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "Kalkulačka IP / podsítě",
         "description": "IPv4 a IPv6 CIDR: maska, rozsahy a počty adres."
       },
+      "dnsLookup": {
+        "title": "Vyhledávání DNS",
+        "description": "Dotazujte DNS záznamy pro libovolnou doménu — A, AAAA, MX, TXT, NS, CNAME."
+      },
       "hashGenerator": {
         "title": "Generátor hashů",
         "description": "MD5, SHA-1 a SHA-2 pro text nebo soubory."

apps/web/messages/da.json

@@ -282,6 +282,10 @@
         "title": "Certifikat / PEM-afkoder",
         "description": "Afkod X.509-certifikater og CSR’er: emne, udsteder, gyldighed og SAN."
       },
+      "sshKeyGenerator": {
+        "title": "SSH / RSA-nøglegenerator",
+        "description": "Generér Ed25519- eller RSA-nøglepar i browseren. Download i OpenSSH- og PEM-format."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "IP-/subnetberegner",
         "description": "IPv4 og IPv6 CIDR: netmaske, intervaller og adresser."
       },
+      "dnsLookup": {
+        "title": "DNS-opslag",
+        "description": "Forespørg DNS-poster for ethvert domæne — A, AAAA, MX, TXT, NS, CNAME."
+      },
       "hashGenerator": {
         "title": "Hash-generator",
         "description": "MD5, SHA-1 og SHA-2 til tekst eller filer."

apps/web/messages/de.json

@@ -282,6 +282,10 @@
         "title": "Zertifikat- / PEM-Decoder",
         "description": "X.509-Zertifikate und CSRs dekodieren: Antragsteller, Aussteller, Gültigkeit, SANs."
       },
+      "sshKeyGenerator": {
+        "title": "SSH / RSA-Schlüsselgenerator",
+        "description": "Ed25519- oder RSA-Schlüsselpaare generieren. Private und öffentliche Schlüssel im OpenSSH- und PEM-Format herunterladen."
+      },
       "jsonFormatter": {
         "title": "JSON-Formatierer",
         "description": "JSON formatieren, validieren und bearbeiten."
@@ -382,6 +386,10 @@
         "title": "IP-/Subnetz-Rechner",
         "description": "IPv4 und IPv6 CIDR: Netzmaske, Bereiche und Adressanzahl."
       },
+      "dnsLookup": {
+        "title": "DNS-Abfrage",
+        "description": "DNS-Einträge für jede Domain abfragen — A, AAAA, MX, TXT, NS, CNAME, SOA, CAA."
+      },
       "hashGenerator": {
         "title": "Hash-Generator",
         "description": "MD5, SHA-1 und SHA-2 für Text oder Dateien."

apps/web/messages/el.json

@@ -282,6 +282,10 @@
         "title": "Αποκωδικοποιητής πιστοποιητικού / PEM",
         "description": "Αποκωδικοποίηση πιστοποιητικών X.509 και CSR: θέμα, εκδότης, ισχύς, SAN."
       },
+      "sshKeyGenerator": {
+        "title": "Γεννήτρια κλειδιών SSH / RSA",
+        "description": "Δημιουργία ζευγών κλειδιών Ed25519 ή RSA στο πρόγραμμα περιήγησης. Λήψη σε μορφές OpenSSH και PEM."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "Υπολογιστής IP / υποδικτύου",
         "description": "IPv4 και IPv6 CIDR: μάσκα, εύρη και πλήθος διευθύνσεων."
       },
+      "dnsLookup": {
+        "title": "Αναζήτηση DNS",
+        "description": "Αναζητήστε εγγραφές DNS για οποιοδήποτε τομέα — A, AAAA, MX, TXT, NS, CNAME."
+      },
       "hashGenerator": {
         "title": "Γεννήτρια hash",
         "description": "MD5, SHA-1 και SHA-2 για κείμενο ή αρχεία."

apps/web/messages/en.json

@@ -339,6 +339,10 @@
         "title": "Certificate / PEM Decoder",
         "description": "Decode X.509 certificates and CSRs: subject, issuer, validity, SANs."
       },
+      "sshKeyGenerator": {
+        "title": "SSH / RSA Key Generator",
+        "description": "Generate Ed25519 or RSA key pairs. Download private and public keys in OpenSSH and PEM formats."
+      },
       "encryptionPlayground": {
         "title": "Encryption Playground",
         "description": "AES-GCM with a raw key or passphrase; JSON bundles, Web Crypto only in your browser."
@@ -419,6 +423,10 @@
         "title": "IP / Subnet Calculator",
         "description": "IPv4 and IPv6 CIDR: netmask, ranges, and address counts."
       },
+      "dnsLookup": {
+        "title": "DNS Lookup",
+        "description": "Query DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, PTR."
+      },
       "hashGenerator": {
         "title": "Hash Generator",
         "description": "MD5, SHA-1, and SHA-2 digests for text or files."
@@ -3430,5 +3438,19 @@
     "errors": {
       "generationFailed": "Key generation failed"
     }
+  },
+  "DnsLookup": {
+    "title": "DNS Lookup",
+    "subtitle": "Query DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, PTR.",
+    "placeholder": "Enter domain (e.g. github.com)",
+    "lookupBtn": "Lookup",
+    "looking": "Looking up…",
+    "refreshBtn": "Refresh",
+    "recordTypesLabel": "Record types",
+    "allBtn": "All",
+    "tryLabel": "Try:",
+    "errors": {
+      "lookupFailed": "DNS lookup failed"
+    }
   }
 }

apps/web/messages/es.json

@@ -282,6 +282,10 @@
         "title": "Decodificador de certificados / PEM",
         "description": "Decodifica certificados X.509 y CSR: sujeto, emisor, validez y SAN."
       },
+      "sshKeyGenerator": {
+        "title": "Generador de claves SSH / RSA",
+        "description": "Genera pares de claves Ed25519 o RSA. Descarga claves en formatos OpenSSH y PEM."
+      },
       "jsonFormatter": {
         "title": "Formateador JSON",
         "description": "Formatea, valida y edita datos JSON."
@@ -382,6 +386,10 @@
         "title": "Calculadora IP / subred",
         "description": "IPv4 e IPv6 CIDR: máscara, rangos y recuento de direcciones."
       },
+      "dnsLookup": {
+        "title": "Búsqueda DNS",
+        "description": "Consulta registros DNS de cualquier dominio — A, AAAA, MX, TXT, NS, CNAME."
+      },
       "hashGenerator": {
         "title": "Generador de hash",
         "description": "MD5, SHA-1 y SHA-2 para texto o archivos."

apps/web/messages/fa.json

@@ -282,6 +282,10 @@
         "title": "رمزگشای گواهی / PEM",
         "description": "رمزگشایی گواهی‌های X.509 و CSR: موضوع، صادرکننده، اعتبار و SAN."
       },
+      "sshKeyGenerator": {
+        "title": "مولد کلید SSH / RSA",
+        "description": "در مرورگر جفت کلید Ed25519 یا RSA تولید کنید. در قالب‌های OpenSSH و PEM دانلود کنید."
+      },
       "jsonFormatter": {
         "title": "JSON Formatter",
         "description": "Format, validate, and edit JSON data."
@@ -382,6 +386,10 @@
         "title": "ماشین‌حساب IP / زیرشبکه",
         "description": "IPv4 و IPv6 CIDR: ماسک، ناحیه، و تعداد آدرس."
       },
+      "dnsLookup": {
+        "title": "جستجوی DNS",
+        "description": "رکوردهای DNS هر دامنه را جستجو کنید — A، AAAA، MX، TXT، NS، CNAME."
+      },
       "hashGenerator": {
         "title": "تولیدکنندهٔ هش",
         "description": "MD5، SHA-1 و SHA-2 برای متن یا فایل."