DNS Report for ac.cn

• a.dns.cn

  • IPv4: 203.119.25.1
  • IPv6: 2001:dc7::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• b.dns.cn

  • IPv4: 203.119.26.1
  • IPv6: 2001:dc7:1::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• c.dns.cn

  • IPv4: 203.119.27.1
  • IPv6: 2001:dc7:2::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• d.dns.cn

  • IPv4: 203.119.28.1
  • IPv6: 2001:dc7:1000::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• e.dns.cn

  • IPv4: 203.119.29.1
  • IPv6: 2001:dc7:3::1
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• cns.cernet.net

  • IPv4: 202.112.0.44, 103.137.60.44
  • IPv6: 2001:da8:1:100::44, 2001:dd9::44, 2001:250:c006::44
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• a.dns.cn

  • Status: Failed: The DNS response does not contain an answer to the question: ac.cn. IN A
  • IP(s):
  • TTL: N/A seconds
  • Recursive Queries: Error checking recursive queries: The DNS operation timed out.
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• b.dns.cn

  • Status: Failed: The DNS response does not contain an answer to the question: ac.cn. IN A
  • IP(s):
  • TTL: N/A seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• c.dns.cn

  • Status: Failed: The DNS response does not contain an answer to the question: ac.cn. IN A
  • IP(s):
  • TTL: N/A seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• d.dns.cn

  • Status: Failed: The DNS operation timed out after 5.402277946472168 seconds
  • IP(s):
  • TTL: N/A seconds
  • Recursive Queries: Error checking recursive queries: The DNS operation timed out.
  • TCP Connectivity: TCP connection failed: The DNS operation timed out.

• e.dns.cn

  • Status: Failed: The DNS response does not contain an answer to the question: ac.cn. IN A
  • IP(s):
  • TTL: N/A seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• cns.cernet.net

  • Status: Failed: The DNS response does not contain an answer to the question: ac.cn. IN A
  • IP(s):
  • TTL: N/A seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

a.dns.cn

• Serial: 2027202084
• Refresh: 7200
• Retry: 3600
• Expire: 2419200
• Minimum TTL: 21600

b.dns.cn

• Serial: 2027202084
• Refresh: 7200
• Retry: 3600
• Expire: 2419200
• Minimum TTL: 21600

c.dns.cn

• Serial: 2027202084
• Refresh: 7200
• Retry: 3600
• Expire: 2419200
• Minimum TTL: 21600

d.dns.cn

Error: The DNS operation timed out after 5.402199745178223 seconds

e.dns.cn

• Serial: 2027202084
• Refresh: 7200
• Retry: 3600
• Expire: 2419200
• Minimum TTL: 21600

cns.cernet.net

• Serial: 2027202084
• Refresh: 7200
• Retry: 3600
• Expire: 2419200
• Minimum TTL: 21600

Serial - Warning: Inconsistent across nameservers

REFRESH - Warning: Inconsistent across nameservers

RETRY - Warning: Inconsistent across nameservers

EXPIRE - Warning: Inconsistent across nameservers

MINIMUM TTL - Warning: Inconsistent across nameservers

a.dns.cn

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

b.dns.cn

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

c.dns.cn

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

d.dns.cn

Error: The DNS operation timed out after 5.401718378067017 seconds

e.dns.cn

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

cns.cernet.net

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

MX Record Consistency - OK

MX Record Count - OK

No PTR records data available.

• Signed: Yes
• Validation: Successful
• DNSKEY Records: 2
• DS Records in parent zone: 0
• DS at Parent: None

DNSSEC - OK

SPF Record Published: Failed

Multiple SPF Records: Passed

Errors:

• No TXT records found

• DKIM Records Found: No

Warnings:

• No DKIM records found for common selectors

• Record: None
• Syntax: Invalid
• Policy: None
• RUA (Aggregate Reports):

DMARC External Validation:

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

Errors:

• DMARC record does not exist