ASN & DNS Lookups in Swift

Returns the ASN, owning organization, network range, and country for an IP — and whether it belongs to a datacenter. Nullable fields are optionals.

let client = IpApiClient(apiKey: ProcessInfo.processInfo.environment["IP_API_IO_KEY"]!)

let asn = try await client.asn(ip: "8.8.8.8")

print(asn.asn ?? 0)             // 15169
print(asn.organization ?? "")   // "Google LLC"
print(asn.isDatacenter)         // true

WHOIS record for a domain: registrar, registration/expiry/update dates, name servers, status codes, and the raw WHOIS text.

let whois = try await client.whois(domain: "example.com")

print(whois.registrar?.name ?? "")
print(whois.registeredOn ?? "") // "1995-08-14"
print(whois.nameServers)

Resolve a PTR record, resolve a hostname to addresses, or list a domain's mail servers.

let rdns = try await client.reverseDns(ip: "8.8.8.8")
print(rdns.hostname ?? "") // "dns.google"

let fdns = try await client.forwardDns(hostname: "dns.google")
for record in fdns.addresses {
    print(record.type, record.address, record.ttl) // "A" "8.8.8.8" 300
}

let mx = try await client.mxRecords(domain: "example.com")
for record in mx.mxRecords {
    print(record.priority, record.hostname, record.ttl)
}