DNS Report for gvt1-cn.com

• ns1.google.com

  • IPv4: 216.239.32.10
  • IPv6: 2001:4860:4802:32::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns4.google.com

  • IPv4: 216.239.38.10
  • IPv6: 2001:4860:4802:38::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns2.google.com

  • IPv4: 216.239.34.10
  • IPv6: 2001:4860:4802:34::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• ns3.google.com

  • IPv4: 216.239.36.10
  • IPv6: 2001:4860:4802:36::a
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• ns1.google.com

  • Status: Responded
  • IP(s): 142.251.163.94
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns4.google.com

  • Status: Responded
  • IP(s): 142.251.163.94
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns2.google.com

  • Status: Responded
  • IP(s): 142.251.163.94
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• ns3.google.com

  • Status: Responded
  • IP(s): 142.251.163.94
  • TTL: 300 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

ns1.google.com

• Serial: 662450801
• Refresh: 900
• Retry: 900
• Expire: 1800
• Minimum TTL: 60

ns4.google.com

• Serial: 662450801
• Refresh: 900
• Retry: 900
• Expire: 1800
• Minimum TTL: 60

ns2.google.com

• Serial: 662450801
• Refresh: 900
• Retry: 900
• Expire: 1800
• Minimum TTL: 60

ns3.google.com

• Serial: 662450801
• Refresh: 900
• Retry: 900
• Expire: 1800
• Minimum TTL: 60

Serial: 662450801 - OK

REFRESH: 900 - OK

RETRY: 900 - OK

EXPIRE: 1800 - OK

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

ns1.google.com

Error: The DNS response does not contain an answer to the question: gvt1-cn.com. IN MX

ns4.google.com

Error: The DNS response does not contain an answer to the question: gvt1-cn.com. IN MX

ns2.google.com

Error: The DNS response does not contain an answer to the question: gvt1-cn.com. IN MX

ns3.google.com

Error: The DNS response does not contain an answer to the question: gvt1-cn.com. IN MX

MX Record Consistency - OK

MX Record Count - OK

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 include:_spf.google.com ~all
• SPF Syntax: Passed
• Deprecated Elements: Passed
• IP Addresses:
• Includes: _spf.google.com
• DNS Lookups: 2
• 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=reject; rua=mailto:[email protected]
• Syntax: Valid
• Policy: reject
• RUA (Aggregate Reports): mailto:[email protected]

DMARC External Validation:

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