DNS Report for dnb.com

• a1-67.akam.net

  • IPv4: 193.108.91.67
  • IPv6: 2600:1401:2::43
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• a13-66.akam.net

  • IPv4: 2.22.230.66
  • IPv6: 2600:1480:800::42
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• a7-66.akam.net

  • IPv4: 23.61.199.66
  • IPv6: 2600:1406:32::42
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• a6-66.akam.net

  • IPv4: 23.211.133.66
  • IPv6: 2600:1401:1::42
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• a10-67.akam.net

  • IPv4: 96.7.50.67
  • IPv6: 2600:1480:d000::43
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• a12-66.akam.net

  • IPv4: 184.26.160.66
  • IPv6: 2600:1480:f000::42
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• a1-67.akam.net

  • Status: Responded
  • IP(s): 184.27.1.147
  • TTL: 20 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

• a13-66.akam.net

  • Status: Responded
  • IP(s): 184.27.1.147
  • TTL: 20 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

• a7-66.akam.net

  • Status: Responded
  • IP(s): 184.27.1.147
  • TTL: 20 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

• a6-66.akam.net

  • Status: Responded
  • IP(s): 184.27.1.147
  • TTL: 20 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

• a10-67.akam.net

  • Status: Responded
  • IP(s): 184.27.1.147
  • TTL: 20 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

• a12-66.akam.net

  • Status: Responded
  • IP(s): 184.27.1.147
  • TTL: 20 seconds
  • Recursive Queries: Unclear (Response code: NXDOMAIN)
  • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)

a1-67.akam.net

• Serial: 2021082725
• Refresh: 1200
• Retry: 600
• Expire: 1209600
• Minimum TTL: 3600

a13-66.akam.net

• Serial: 2021082725
• Refresh: 1200
• Retry: 600
• Expire: 1209600
• Minimum TTL: 3600

a7-66.akam.net

• Serial: 2021082725
• Refresh: 1200
• Retry: 600
• Expire: 1209600
• Minimum TTL: 3600

a6-66.akam.net

• Serial: 2021082725
• Refresh: 1200
• Retry: 600
• Expire: 1209600
• Minimum TTL: 3600

a10-67.akam.net

• Serial: 2021082725
• Refresh: 1200
• Retry: 600
• Expire: 1209600
• Minimum TTL: 3600

a12-66.akam.net

• Serial: 2021082725
• Refresh: 1200
• Retry: 600
• Expire: 1209600
• Minimum TTL: 3600

Serial: 2021082725 - OK

REFRESH: 1200 - OK

RETRY: 600 - OK

EXPIRE: 1209600 - OK

MINIMUM TTL: 3600 - OK

a1-67.akam.net

• 0 dnb-com.mail.protection.outlook.com ( 52.101.8.36 )

a13-66.akam.net

• 0 dnb-com.mail.protection.outlook.com ( 52.101.8.36 )

a7-66.akam.net

• 0 dnb-com.mail.protection.outlook.com ( 52.101.9.0 )

a6-66.akam.net

• 0 dnb-com.mail.protection.outlook.com ( 52.101.10.12 )

a10-67.akam.net

• 0 dnb-com.mail.protection.outlook.com ( 52.101.9.12 )

a12-66.akam.net

• 0 dnb-com.mail.protection.outlook.com ( 52.101.9.0 )

MX Record Consistency - Warning: Inconsistencies found

MX Record Count - Warning: Only one MX record

• 12.10.101.52.in-addr.arpa -> mail-bn1pr21cu00204.inbound.protection.outlook.com
• 0.9.101.52.in-addr.arpa -> mail-bl2pr02cu00100.inbound.protection.outlook.com
• 36.8.101.52.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 36.8.101.52.in-addr.arpa.
• 12.9.101.52.in-addr.arpa -> mail-bl0pr05cu00504.inbound.protection.outlook.com

PTR Records - OK

• Signed: Yes
• Validation: Successful
• DNSKEY Records: 4
• DS Records in parent zone: 0
• DS at Parent: False

DNSSEC - OK

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:

• Record: v=spf1 ip4:159.137.80.91 ip4:159.137.90.91 ip4:72.19.252.170 ip4:220.130.152.173 ip4:204.92.22.200/30 ip4:12.129.29.143 ip4:158.151.208.120/24 ip4:158.151.214.66/28 ip4:165.193.97.93
• SPF Syntax: Passed
• Deprecated Elements: Passed
• IP Addresses: 159.137.80.91, 159.137.90.91, 72.19.252.170, 220.130.152.173, 204.92.22.200/30, 12.129.29.143, 158.151.208.120/24, 158.151.214.66/28, 165.193.97.93
• Includes:
• DNS Lookups: 0
• Void Lookups: Passed
• Escaping Chars: Not Present
• All Mechanism: Not Present

Warnings:

• SPF record doesn't contain an 'all' mechanism

• DKIM Records Found: Yes
• Selectors Found: k1
• Selector 'k1':
  Record: v=DKIM1;k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDk2qnamPIxlqH4q44Y3ZHutl00nv8usrLsVPY5qkdzGk5utRFRipAnMxok0Ck2XMERA1rgveZZHgn0WGgMCTw8ZQP/GEJ8WpqlWvjJoQdkGR6Yr3vl5wuR+/dkrwwFqy6hGzEExKEENtsf1vk68QjbblRZ/mtfwoFeQcLrsqiuqQIDAQAB
• Valid Syntax: Yes

• Record: v=DMARC1;p=reject;pct=100;fo=1;ruf=mailto:[email protected];rua=mailto:[email protected]
• Syntax: Valid
• Policy: reject
• Percent: 100%
• RUA (Aggregate Reports): mailto:[email protected]
• RUF (Forensic Reports): mailto:[email protected]
• Failure Options (fo): 1

DMARC External Validation:

• Valid external domains: auth.returnpath.net, auth.returnpath.net
• All external domains in your DMARC record are giving permission to send them DMARC reports.