216.73.216.201{
"ip": "216.73.216.201",
"family": 4,
"asn": 16509,
"asname": "Amazon",
"prefix": "216.73.216.0/22",
"lookup": "https://robtex.com/en/ip-lookup/216/73/216/201",
"reputation": "https://rbls.org/en/ip-reputations/216.73.216.201",
"tcp": {
"mtu": 1500,
"mss": 1448,
"pmtu": 1500,
"snd_wscale": 7,
"rcv_wscale": 7,
"rtt_ms": 15.8,
"min_rtt_ms": 15.8,
"congestion": "bbr",
"options": {
"timestamps": true,
"sack": true,
"wscale": true,
"ecn": false,
"ecn_seen": false,
"fastopen": false
},
"mtu_derivation": "1448 (MSS) + 12 (timestamps) + 20 (TCP) + 20 (IP) = 1500",
"mss_derivation": "1500 (MTU) - 20 (IP) - 20 (TCP) - 12 (timestamps) = 1448",
"retrans": 0,
"total_retrans": 0,
"lost": 0,
"retransmits": 0,
"reordering": 3,
"bytes_retrans": 0,
"delivery_rate": 274675,
"delivery_rate_human": "2.2 Mbit/s",
"pacing_rate": 2622426,
"pacing_rate_human": "21 Mbit/s",
"snd_cwnd": 13,
"rcv_ssthresh": 64076,
"notsent_bytes": 0,
"rcv_rtt_ms": null,
"bytes_sent": 4419,
"bytes_acked": 3814,
"bytes_received": 596,
"segs_in": 7,
"segs_out": 5,
"notes": []
},
"html": "https://zorigin-uni.robtex.com/html",
"formats": {
"ip": "https://zorigin-uni.robtex.com/ip",
"json": "https://zorigin-uni.robtex.com/json",
"html": "https://zorigin-uni.robtex.com/html",
"md": "https://zorigin-uni.robtex.com/md",
"text": "https://zorigin-uni.robtex.com/text"
},
"alternates": {
"ipv4": "https://ipv4.robtex.com/json",
"ipv6": "https://ipv6.robtex.com/json",
"ip": "https://ip.robtex.com/json"
}
}This is the free Robtex what-is-my-IP echo service. It answers with the public IP address your request came from — useful for scripts, monitors and humans alike. CORS is open and there are no rate limits for reasonable use.
216.73.216.0/22You are using https. You can also reach this via http: http://zorigin-uni.robtex.com/html
No DNS or TLS needed: http://46.255.120.53/ip and http://[2a00:9c00:120::53]/ip hit the same anycast service by IP literal — handy when your resolver or clock is broken.
The DNS-based siblings echo your resolver instead of your client IP: dig +short dnsip.robtex.com (or dnsipv4 / dnsipv6), and dig txt dnsip.robtex.com for resolver PTR/ASN/EDNS details.