#networking

Check DNS propagation by querying a record across several major public resolvers at once — Google (8.8.8.8), Cloudflare (1.1.1.1), AdGuard and dns.sb — and seeing whether they all return the same answer. Pass a domain and a record type and the service queries every resolver in parallel and reports each resolver's answers, whether they are consistent (the change has fully propagated) or still differ (mid-propagation, stale caching or split-horizon DNS), the number of distinct answer sets and the union of all answers. Supported record types: A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA and PTR. A single-resolver endpoint queries one named resolver on its own, and a failing resolver is reported per-resolver without failing the whole call. Live DoH (DNS-over-HTTPS) JSON queries, always current. Built for verifying DNS changes after a migration or launch, debugging split-horizon or stale-cache issues, and uptime/propagation monitoring. A DNS propagation checker — distinct from single-resolver record lookup (dns), the email-authentication analyzer (emailsec) and WHOIS (whois). No upstream key, no cache.

api.oanor.com/dnspropagation-api

Look up the live Tor network as an API — powered by the Tor Project's official Onionoo service and the canonical bulk exit-node list. Check whether any IPv4 or IPv6 address is a Tor relay (is_tor_relay) and whether it is an exit node that clients leave the network through (is_exit_node, corroborated against the bulk exit list), returning the full matching relay record(s): nickname, fingerprint, flags, country, autonomous system, advertised bandwidth, exit-policy summary and first/last-seen dates. Or search the public relay list by nickname, fingerprint, IP, country or flag (Exit, Guard, Fast, Stable…) with paging. Built for fraud and abuse triage, login-risk scoring, comment- and registration-filtering, and network research — knowing at a glance whether a connection originates from the Tor network. Range data is fetched live from the Tor Project, so it is always current. A Tor-network lookup — distinct from cloud/CDN attribution (cloudips), IP geolocation (ipgeo), ASN/BGP ownership (asn, ripestat) and open-port exposure (internetdb). No upstream key, no cache.

api.oanor.com/tor-api

Atribuya cualquier dirección IP al proveedor de cloud, CDN, región y servicio que la posee — a partir de las listas oficiales de intervalos IP publicadas por AWS, Google Cloud, Cloudflare, Oracle Cloud (OCI), Fastly y GitHub. Pase una dirección IPv4 o IPv6 y obtenga cada prefijo coincidente con su proveedor, región/ámbito y servicio, además de un indicador is_cloud que le dice de un vistazo si la dirección pertenece a un cloud o CDN conocido — o liste los intervalos publicados de un solo proveedor, filtrados por región, servicio y versión IP. Diseñado para listas de permitidos en cortafuegos, clasificación de abusos y fraudes, clasificación de bots y tráfico de salida, defensa contra SSRF y para saber si el tráfico entrante o saliente se origina en un cloud o CDN. Los datos de intervalos se obtienen en vivo de la lista pública canónica de cada proveedor, por lo que siempre están actualizados. Un servicio de atribución de IP de cloud/CDN — distinto de la geolocalización IP (ipgeo), la propiedad ASN/BGP (asn, ripestat), la exposición de puertos abiertos (internetdb) y los registros de protocolos/puertos IANA (netports, ipprotocols). Sin clave upstream, sin caché.

api.oanor.com/cloudips-api

El registro "Números de protocolo de Internet asignados" de la IANA como una API: el valor de 8 bits transportado en el campo de protocolo IPv4 (y el siguiente encabezado IPv6) que identifica el protocolo encapsulado. Resuelva cualquier número a su protocolo (por ejemplo, 6 → TCP, 17 → UDP, 1 → ICMP, 47 → GRE, 50 → ESP, 58 → IPv6-ICMP, 89 → OSPF, 132 → SCTP), busque por palabra clave, busque por nombre, o liste los 151 protocolos asignados, cada uno con su palabra clave, nombre completo, indicador de encabezado de extensión IPv6 y RFC definitorio. Ideal para herramientas de paquetes/cortafuegos, análisis de red, decodificadores NetFlow/IPFIX y documentación de protocolos. (Distinto de los números de puerto de servicio de capa de transporte.)

api.oanor.com/ipprotocols-api

Look up Autonomous System Numbers (ASNs) — the identifiers that label every network on the public internet — mapped to their owning organisation and country. 122,000+ ASNs derived from the Regional Internet Registries (ARIN, RIPE, APNIC, LACNIC, AFRINIC). Resolve an ASN to its operator (e.g. AS15169 → Google LLC, US; AS13335 → Cloudflare; AS16509 → Amazon), or search by organisation name and country (e.g. "hetzner" in DE). Ideal for network intelligence, abuse/security investigation, traffic analysis, IP-reputation tooling and BGP/peering research.

api.oanor.com/asn-api

The official IANA Service Name and Transport Protocol Port Number registry as an API — 12,500+ TCP, UDP, SCTP and DCCP port assignments. Look up what service runs on a port (e.g. 443 → https), find which port(s) a named service uses (e.g. ssh → 22), and search the registry by service or description. A handy reference for networking, DevOps, security and firewall tooling.

api.oanor.com/netports-api