DNS Report for scientificamerican.com

• ns-1137.awsdns-14.org

  • IPv4: 205.251.196.113
  • IPv6: 2600:9000:5304:7100::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns-1733.awsdns-24.co.uk

  • IPv4: 205.251.198.197
  • IPv6: 2600:9000:5306:c500::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns-265.awsdns-33.com

  • IPv4: 205.251.193.9
  • IPv6: 2600:9000:5301:900::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns-918.awsdns-50.net

  • IPv4: 205.251.195.150
  • IPv6: 2600:9000:5303:9600::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• ns-1137.awsdns-14.org

  • Status: Responded
  • IP(s): 151.101.65.55, 151.101.193.55, 151.101.1.55, 151.101.129.55
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns-1733.awsdns-24.co.uk

  • Status: Responded
  • IP(s): 151.101.1.55, 151.101.65.55, 151.101.193.55, 151.101.129.55
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns-265.awsdns-33.com

  • Status: Responded
  • IP(s): 151.101.65.55, 151.101.1.55, 151.101.193.55, 151.101.129.55
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns-918.awsdns-50.net

  • Status: Responded
  • IP(s): 151.101.129.55, 151.101.65.55, 151.101.1.55, 151.101.193.55
  • TTL: 300 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

ns-1137.awsdns-14.org

• Serial: 1
• Refresh: 7200
• Retry: 900
• Expire: 1209600
• Minimum TTL: 86400

ns-1733.awsdns-24.co.uk

• Serial: 1
• Refresh: 7200
• Retry: 900
• Expire: 1209600
• Minimum TTL: 86400

ns-265.awsdns-33.com

• Serial: 1
• Refresh: 7200
• Retry: 900
• Expire: 1209600
• Minimum TTL: 86400

ns-918.awsdns-50.net

• Serial: 1
• Refresh: 7200
• Retry: 900
• Expire: 1209600
• Minimum TTL: 86400

Serial: 1 - OK

REFRESH: 7200 - OK

RETRY: 900 - OK

EXPIRE: 1209600 - OK

MINIMUM TTL: 86400 - Note: Outside recommended range (1-3 hours)

ns-1137.awsdns-14.org

• 0 null.scientificamerican.com ( No IP found )

ns-1733.awsdns-24.co.uk

• 0 null.scientificamerican.com ( No IP found )

ns-265.awsdns-33.com

• 0 null.scientificamerican.com ( No IP found )

ns-918.awsdns-50.net

• 0 null.scientificamerican.com ( No IP found )

MX Record Consistency - OK

MX Record Count - Warning: Only one MX record

No PTR records data available.

• Signed: No
• Validation: Failed
• DNSKEY Records: None
• DS Records in parent zone: None
• DS at Parent: None

DNSSEC - Note: Domain is not signed with DNSSEC

Error: No DNSSEC records found

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:

• Record: v=spf1 ip4:1.1.1.1 ip4:64.106.177.144 -all
• SPF Syntax: Passed
• Deprecated Elements: Passed
• IP Addresses: 1.1.1.1, 64.106.177.144
• Includes:
• DNS Lookups: 1
• Void Lookups: Passed
• Escaping Chars: Not Present
• All Mechanism: -all

• DKIM Records Found: No

Warnings:

• No DKIM records found for common selectors

• Record: v=DMARC1; p=none; pct=100; rua=mailto:[email protected]
• Syntax: Valid
• Policy: none
• Percent: 100%
• RUA (Aggregate Reports): mailto:[email protected]

DMARC External Validation:

• Valid external domains: sciam.com
• All external domains in your DMARC record are giving permission to send them DMARC reports.