DNS Report for anker-in.com

• vip4.alidns.com

  • IPv4: 140.205.1.6, 170.33.73.27, 170.33.32.211, 170.33.40.137, 170.33.80.11, 8.212.93.4
  • IPv6: 2408:4009:500::4
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

• vip3.alidns.com

  • IPv4: 170.33.40.136, 170.33.32.210, 140.205.1.5, 170.33.80.10, 8.212.93.3, 170.33.73.26
  • IPv6: 2408:4009:500::3
  • TTL (IPv4): 30 seconds
  • TTL (IPv6): 30 seconds
  • Recursive: N/A

Nameserver Count - OK

• vip4.alidns.com

  • Status: Responded
  • IP(s): 192.0.78.247, 192.0.78.157
  • TTL: 600 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

• vip3.alidns.com

  • Status: Responded
  • IP(s): 192.0.78.247, 192.0.78.157
  • TTL: 600 seconds
  • Recursive Queries: Does not allow recursive queries
  • TCP Connectivity: TCP connection failed (Response code: REFUSED)

vip4.alidns.com

• Serial: 2024071815
• Refresh: 3600
• Retry: 1200
• Expire: 86400
• Minimum TTL: 600

vip3.alidns.com

• Serial: 2024072607
• Refresh: 3600
• Retry: 1200
• Expire: 86400
• Minimum TTL: 600

Serial - Warning: Inconsistent across nameservers

REFRESH: 3600 - OK

RETRY: 1200 - OK

EXPIRE: 86400 - OK

MINIMUM TTL: 600 - Note: Outside recommended range (1-3 hours)

vip4.alidns.com

• 10 mx1.feishu.cn ( 54.221.254.138 )
• 20 mx-china.feishu.cn ( 220.243.190.1 )
• 20 mx2.feishu.cn ( 220.243.190.1 )
• 30 mx3.feishu.cn ( 54.221.254.138 )

vip3.alidns.com

• 10 mx1.feishu.cn ( 54.221.254.138 )
• 20 mx-china.feishu.cn ( 122.14.229.0 )
• 20 mx2.feishu.cn ( 122.14.229.0 )
• 30 mx3.feishu.cn ( 52.220.106.220 )

MX Record Consistency - Warning: Inconsistencies found

MX Record Count - OK

• 1.190.243.220.in-addr.arpa -> No PTR record found: The DNS operation timed out after 5.401928424835205 seconds
• 138.254.221.54.in-addr.arpa -> ec2-54-221-254-138.compute-1.amazonaws.com
• 1.190.243.220.in-addr.arpa -> No PTR record found: The DNS operation timed out after 5.401371240615845 seconds
• 220.106.220.52.in-addr.arpa -> ec2-52-220-106-220.ap-southeast-1.compute.amazonaws.com
• 0.229.14.122.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 0.229.14.122.in-addr.arpa.
• 0.229.14.122.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 0.229.14.122.in-addr.arpa.
• 138.254.221.54.in-addr.arpa -> ec2-54-221-254-138.compute-1.amazonaws.com

PTR Records - OK

• Signed: Yes
• Validation: Failed
• DNSKEY Records: 2
• DS Records in parent zone: 0
• DS at Parent: False

DNSSEC - Warning: Validation failed

Issue: No DS record found at the parent zone.

Action: Please add the DS record to both your DNS server and domain registrar.

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:

• Record: v=spf1 +include:_netblocks.m.feishu.cn ~all
• SPF Syntax: Passed
• Deprecated Elements: Passed
• IP Addresses:
• Includes: _netblocks.m.feishu.cn
• 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: 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:

• No DMARC record found