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DNS Report for citigroup.com

Date Generated: 2024-08-12 00:20:27
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Nameservers

  • ns2.nsroot2.com
    • IPv4: 193.108.91.190
    • IPv6: No IPv6 found
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): N/A seconds
    • Recursive: N/A
  • ns1.nsroot1.com
    • IPv4: 156.154.64.172
    • IPv6: No IPv6 found
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): N/A seconds
    • Recursive: N/A

Nameserver Count - OK

Nameserver Queries

  • ns2.nsroot2.com
    • Status: Responded
    • IP(s): 104.96.178.165, 104.94.222.171
    • TTL: 3600 seconds
    • Recursive Queries: Unclear (Response code: NXDOMAIN)
    • TCP Connectivity: TCP connection failed (Response code: NXDOMAIN)
  • ns1.nsroot1.com
    • Status: Responded
    • IP(s): 104.96.178.165, 104.94.222.171
    • TTL: 3600 seconds
    • Recursive Queries: Allows recursive queries
    • TCP Connectivity: Allows TCP connections

SOA Records

ns2.nsroot2.com
  • Serial: 2021096177
  • Refresh: 3600
  • Retry: 300
  • Expire: 2419200
  • Minimum TTL: 3600
ns1.nsroot1.com
  • Serial: 2021096177
  • Refresh: 3600
  • Retry: 300
  • Expire: 2419200
  • Minimum TTL: 3600

Serial: 2021096177 - OK

REFRESH: 3600 - OK

RETRY: 300 - OK

EXPIRE: 2419200 - OK

MINIMUM TTL: 3600 - OK

MX Records

ns2.nsroot2.com
ns1.nsroot1.com

MX Record Consistency - OK

MX Record Count - OK

Reverse MX A records (PTR)

  • 106.145.231.67.in-addr.arpa -> mx-a.mail.citi.com
  • 94.153.231.67.in-addr.arpa -> mx-b.mail.citi.com

PTR Records - OK

DNSSEC

DNSSEC Inspector
  • 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 (Sender Policy Framework)

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:
  • Record: v=spf1 a:1._spf.citigroup.com a:2._spf.citigroup.com include:spf-00123c01.pphosted.com redirect=ext1._spf.citigroup.com
  • SPF Syntax: Failed
  • Deprecated Elements: Passed
  • IP Addresses:
  • Includes: spf-00123c01.pphosted.com
  • DNS Lookups: 3
  • 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 (DomainKeys Identified Mail)

  • DKIM Records Found: No
Warnings:
  • No DKIM records found for common selectors

DMARC

DMARC External Validation:
  • Valid external domains: emaildefense.proofpoint.com, citi.com
  • All external domains in your DMARC record are giving permission to send them DMARC reports.
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