DNS Report for cisco.com

• ns3.cisco.com

  • IPv4: 173.37.146.41
  • IPv6: 2001:420:1201:7::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns2.cisco.com

  • IPv4: 64.102.255.44
  • IPv6: 2001:420:2041:5000::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns1.cisco.com

  • IPv4: 72.163.5.201
  • IPv6: 2001:420:1101:6::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• ns3.cisco.com

  • Status: Responded
  • IP(s): 72.163.4.185
  • TTL: 1800 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns2.cisco.com

  • Status: Responded
  • IP(s): 72.163.4.185
  • TTL: 1800 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns1.cisco.com

  • Status: Responded
  • IP(s): 72.163.4.185
  • TTL: 1800 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

ns3.cisco.com

• Serial: 907015
• Refresh: 7200
• Retry: 1800
• Expire: 864000
• Minimum TTL: 1800

ns2.cisco.com

• Serial: 907015
• Refresh: 7200
• Retry: 1800
• Expire: 864000
• Minimum TTL: 1800

ns1.cisco.com

• Serial: 907015
• Refresh: 7200
• Retry: 1800
• Expire: 864000
• Minimum TTL: 1800

Serial: 907015 - OK

REFRESH: 7200 - OK

RETRY: 1800 - OK

EXPIRE: 864000 - OK

MINIMUM TTL: 1800 - Note: Outside recommended range (1-3 hours)

ns3.cisco.com

• 10 alln-mx-01.cisco.com ( 173.37.147.230 )
• 20 rcdn-mx-01.cisco.com ( 72.163.7.166 )
• 30 aer-mx-01.cisco.com ( 173.38.212.150 )

ns2.cisco.com

• 10 alln-mx-01.cisco.com ( 173.37.147.230 )
• 20 rcdn-mx-01.cisco.com ( 72.163.7.166 )
• 30 aer-mx-01.cisco.com ( 173.38.212.150 )

ns1.cisco.com

• 10 alln-mx-01.cisco.com ( 173.37.147.230 )
• 20 rcdn-mx-01.cisco.com ( 72.163.7.166 )
• 30 aer-mx-01.cisco.com ( 173.38.212.150 )

MX Record Consistency - OK

MX Record Count - OK

• 230.147.37.173.in-addr.arpa -> alln-mx-01.cisco.com
• 166.7.163.72.in-addr.arpa -> rcdn-mx-01.cisco.com
• 150.212.38.173.in-addr.arpa -> aer-mx-01.cisco.com

PTR Records - OK

• 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 redirect=spfa._spf.cisco.com
• SPF Syntax: Failed
• Deprecated Elements: Passed
• IP Addresses:
• Includes:
• DNS Lookups: 1
• Void Lookups: Passed
• Escaping Chars: Not Present
• All Mechanism: Not Present

Warnings:

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

Errors:

• SPF record syntax is invalid

• DKIM Records Found: Yes
• Selectors Found: selector1
• Selector 'selector1':
  Record: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCjN5Xp1l7IEMtDjUpQ61s47LO3/3qJ1XtSXNzH97DTjYgsk7DKB2+QLVXwI1wkoTQq0YqyE6jLeYDhsLWXW45hXuzNG9luLtCFBDB8KPovIkT+PyufDfSmg5DLdaHIPFzeGDMt7xlTuZLFdDI8Dckp5zoHaBuOj8kBeFxardonrQIDAQAB;
• Valid Syntax: Yes

• Record: v=DMARC1; p=reject; pct=100; sp=reject; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected];
• Syntax: Valid
• Policy: reject
• Subdomain Policy: reject
• Percent: 100%
• RUA (Aggregate Reports): mailto:[email protected]
• RUF (Forensic Reports): mailto:[email protected]
• Failure Options (fo): 1
• Reporting Interval: 3600 seconds

DMARC External Validation:

• Valid external domains: ag.dmarcian.com, fr.dmarcian.com
• All external domains in your DMARC record are giving permission to send them DMARC reports.