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DNS Report for techcombank.com.vn

Date Generated: 2024-09-02 13:13:55
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Nameservers

  • ns1.techcombank.com.vn
    • IPv4: 103.4.128.8
    • IPv6: No IPv6 found
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): N/A seconds
    • Recursive: N/A
  • ns2.techcombank.com.vn
    • IPv4: 103.4.130.8
    • IPv6: No IPv6 found
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): N/A seconds
    • Recursive: N/A

Nameserver Count - OK

Nameserver Queries

  • ns1.techcombank.com.vn
    • Status: Responded
    • IP(s): 103.4.128.120
    • TTL: 30 seconds
    • Recursive Queries: Error checking recursive queries: The DNS operation timed out.
    • TCP Connectivity: TCP connection failed: [Errno 111] Connection refused
  • ns2.techcombank.com.vn
    • Status: Responded
    • IP(s): 103.4.128.120
    • TTL: 30 seconds
    • Recursive Queries: Error checking recursive queries: The DNS operation timed out.
    • TCP Connectivity: TCP connection failed: [Errno 111] Connection refused

SOA Records

ns1.techcombank.com.vn
  • Serial: 2024082906
  • Refresh: 3600
  • Retry: 120
  • Expire: 86400
  • Minimum TTL: 60
ns2.techcombank.com.vn
  • Serial: 2024082906
  • Refresh: 3600
  • Retry: 120
  • Expire: 86400
  • Minimum TTL: 60

Serial: 2024082906 - OK

REFRESH: 3600 - OK

RETRY: 120 - OK

EXPIRE: 86400 - OK

MINIMUM TTL: 60 - Note: Outside recommended range (1-3 hours)

MX Records

ns1.techcombank.com.vn
ns2.techcombank.com.vn

MX Record Consistency - OK

MX Record Count - OK

Reverse MX A records (PTR)

  • 90.128.4.103.in-addr.arpa -> mail2.techcombank.com.vn
  • 89.128.4.103.in-addr.arpa -> mail.techcombank.com.vn
  • 12.130.4.103.in-addr.arpa -> mail1.techcombank.com.vn
  • 89.130.4.103.in-addr.arpa -> mail3.techcombank.com.vn

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 mx a ip4:103.4.128.0/22 -all
  • SPF Syntax: Failed
  • Deprecated Elements: Passed
  • IP Addresses: 103.4.128.0/22
  • Includes:
  • DNS Lookups: 3
  • Void Lookups: Passed
  • Escaping Chars: Not Present
  • All Mechanism: -all
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:
  • All external domains in your DMARC record are giving permission to send them DMARC reports.
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