# curl -v https://otx.alienvault.com/api/v1/indicators/domain/ea.com/passive_dns
* Host otx.alienvault.com:443 was resolved.
* IPv6: (none)
* IPv4: 108.139.15.46, 108.139.15.123, 108.139.15.115, 108.139.15.43
* Trying 108.139.15.46:443...
* ALPN: curl offers h2,http/1.1
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* CAfile: /etc/ssl/certs/ca-certificates.crt
* CApath: none
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_128_GCM_SHA256 / X25519MLKEM768 / RSASSA-PSS
* ALPN: server did not agree on a protocol. Uses default.
* Server certificate:
* subject: CN=otx.alienvault.io
* start date: Jan 18 00:00:00 2025 GMT
* expire date: Feb 15 23:59:59 2026 GMT
* subjectAltName: host "otx.alienvault.com" matched cert's "otx.alienvault.com"
* issuer: C=US; O=Amazon; CN=Amazon RSA 2048 M02
* SSL certificate verify ok.
* Certificate level 0: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
* Certificate level 1: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
* Certificate level 2: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
* Connected to otx.alienvault.com (108.139.15.46) port 443
* using HTTP/1.x
> GET /api/v1/indicators/domain/ea.com/passive_dns HTTP/1.1
> Host: otx.alienvault.com
> User-Agent: curl/8.13.0
> Accept: */*
>
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* Request completely sent off
< HTTP/1.1 429 Too Many Requests
< Content-Type: application/json
< Content-Length: 80
< Connection: keep-alive
< Date: Fri, 21 Nov 2025 20:47:40 GMT
< Access-Control-Allow-Origin: *
< Server: gunicorn
< X-Frame-Options: SAMEORIGIN
< X-Remote-User-Name: Anonymous
< X-OTX-ACTIVE: 0
< Vary: Accept-Encoding
< X-Cache: Error from cloudfront
< Via: 1.1 35ccb6cc125c2f90120be4104c394baa.cloudfront.net (CloudFront)
< X-Amz-Cf-Pop: ATL58-P2
< X-Amz-Cf-Id: lhGnlIa30WEjEmbuZ7O7fjPhWEQfWTPA02V1ckb2UPz3qgmK35535A==
<
* Connection #0 to host otx.alienvault.com left intact
{"detail": "Anonymous access to this endpoint is limited. Please authenticate."}
