ASN & DNS Lookups in Rust

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

let client = Client::new(std::env::var("IP_API_IO_KEY")?);

let asn = client.asn("8.8.8.8").await?;

if let Some(number) = asn.asn {
    println!("{number}");          // 15169
}
if let Some(org) = &asn.organization {
    println!("{org}");             // "Google LLC"
}
println!("{}", asn.is_datacenter); // true

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

let whois = client.whois("example.com").await?;

if let Some(registrar) = whois.registrar.as_ref().and_then(|r| r.name.as_ref()) {
    println!("{registrar}");
}
if let Some(registered_on) = &whois.registered_on {
    println!("{registered_on}"); // "1995-08-14"
}
println!("{:?}", whois.name_servers);

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

let rdns = client.reverse_dns("8.8.8.8").await?;
if let Some(hostname) = &rdns.hostname {
    println!("{hostname}"); // "dns.google"
}

let fdns = client.forward_dns("dns.google").await?;
for record in &fdns.addresses {
    println!("{} {} {}", record.r#type, record.address, record.ttl); // "A" "8.8.8.8" 300
}

let mx = client.mx_records("example.com").await?;
for record in &mx.mx_records {
    println!("{} {} {}", record.priority, record.hostname, record.ttl);
}