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DNS Report for comcast.net

Date Generated: 2024-07-06 19:59:09
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Nameservers

  • dns101.comcast.net
    • IPv4: 69.252.250.103
    • IPv6: 2001:558:fe23:8:69:252:250:103
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • dns103.comcast.net
    • IPv4: 68.87.76.228
    • IPv6: 2001:558:1014:c:68:87:76:228
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • dns104.comcast.net
    • IPv4: 68.87.68.244
    • IPv6: 2001:558:100a:5:68:87:68:244
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • dns105.comcast.net
    • IPv4: 68.87.72.244
    • IPv6: 2001:558:100e:5:68:87:72:244
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • dns102.comcast.net
    • IPv4: 68.87.85.132
    • IPv6: 2001:558:1004:7:68:87:85:132
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A

Nameserver Count - OK

Nameserver Queries

  • dns101.comcast.net
    • Status: Responded
    • IP(s): 96.99.227.0
    • TTL: 300 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • dns103.comcast.net
    • Status: Responded
    • IP(s): 96.99.227.0
    • TTL: 300 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • dns104.comcast.net
    • Status: Responded
    • IP(s): 96.99.227.0
    • TTL: 300 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • dns105.comcast.net
    • Status: Responded
    • IP(s): 96.99.227.0
    • TTL: 300 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • dns102.comcast.net
    • Status: Responded
    • IP(s): 96.99.227.0
    • TTL: 300 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)

SOA Records

dns101.comcast.net
  • Serial: 2008255851
  • Refresh: 7200
  • Retry: 3600
  • Expire: 1209600
  • Minimum TTL: 900
dns103.comcast.net
  • Serial: 2008255851
  • Refresh: 7200
  • Retry: 3600
  • Expire: 1209600
  • Minimum TTL: 900
dns104.comcast.net
  • Serial: 2008255851
  • Refresh: 7200
  • Retry: 3600
  • Expire: 1209600
  • Minimum TTL: 900
dns105.comcast.net
  • Serial: 2008255851
  • Refresh: 7200
  • Retry: 3600
  • Expire: 1209600
  • Minimum TTL: 900
dns102.comcast.net
  • Serial: 2008255851
  • Refresh: 7200
  • Retry: 3600
  • Expire: 1209600
  • Minimum TTL: 900

Serial: 2008255851 - OK

REFRESH: 7200 - OK

RETRY: 3600 - OK

EXPIRE: 1209600 - OK

MINIMUM TTL: 900 - Note: Outside recommended range (1-3 hours)

MX Records

dns101.comcast.net
dns103.comcast.net
dns104.comcast.net
dns105.comcast.net
dns102.comcast.net

MX Record Consistency - Warning: Inconsistencies found

MX Record Count - OK

Reverse MX A records (PTR)

  • 181.157.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 181.157.102.96.in-addr.arpa.
  • 147.18.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 147.18.102.96.in-addr.arpa.
  • 181.157.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 181.157.102.96.in-addr.arpa.
  • 146.18.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 146.18.102.96.in-addr.arpa.
  • 180.157.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 180.157.102.96.in-addr.arpa.
  • 147.18.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 147.18.102.96.in-addr.arpa.
  • 163.145.103.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 163.145.103.96.in-addr.arpa.
  • 146.18.102.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 146.18.102.96.in-addr.arpa.
  • 162.145.103.96.in-addr.arpa -> No PTR record found: The DNS query name does not exist: 162.145.103.96.in-addr.arpa.

PTR Records - OK

DNSSEC

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

DNSSEC - OK

SPF (Sender Policy Framework)

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:
  • Record: v=spf1 ip4:96.103.146.48/28 ip4:96.102.19.32/28 ip4:96.102.200.0/28 include:_spfv6.comcast.net include:_spf.mdp.comcast.net ~all
  • SPF Syntax: Passed
  • Deprecated Elements: Passed
  • IP Addresses: 96.103.146.48/28, 96.102.19.32/28, 96.102.200.0/28
  • Includes: _spfv6.comcast.net, _spf.mdp.comcast.net
  • DNS Lookups: 5
  • Void Lookups: Passed
  • Escaping Chars: Not Present
  • All Mechanism: ~all

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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