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DNS Report for ptb.de

Date Generated: 2024-08-08 11:57:45
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Nameservers

  • dns-3.dfn.de
    • IPv4: 193.174.75.58
    • IPv6: 2001:638:d:b103::1
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • dns-2.dfn.de
    • IPv4: 193.174.75.54
    • IPv6: 2001:638:d:b102::1
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • ns1.ptb.de
    • IPv4: 192.53.103.180
    • IPv6: 2001:638:610:bd02::14
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A
  • dns-1.dfn.de
    • IPv4: 193.174.75.50
    • IPv6: 2001:638:d:b101::1
    • TTL (IPv4): 30 seconds
    • TTL (IPv6): 30 seconds
    • Recursive: N/A

Nameserver Count - OK

Nameserver Queries

  • dns-3.dfn.de
    • Status: Responded
    • IP(s): 192.53.103.121
    • TTL: 14400 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • dns-2.dfn.de
    • Status: Responded
    • IP(s): 192.53.103.121
    • TTL: 14400 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • ns1.ptb.de
    • Status: Responded
    • IP(s): 192.53.103.121
    • TTL: 14400 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)
  • dns-1.dfn.de
    • Status: Responded
    • IP(s): 192.53.103.121
    • TTL: 14400 seconds
    • Recursive Queries: Does not allow recursive queries
    • TCP Connectivity: TCP connection failed (Response code: REFUSED)

SOA Records

dns-3.dfn.de
  • Serial: 2024080564
  • Refresh: 1200
  • Retry: 3600
  • Expire: 604800
  • Minimum TTL: 86400
dns-2.dfn.de
  • Serial: 2024080564
  • Refresh: 1200
  • Retry: 3600
  • Expire: 604800
  • Minimum TTL: 86400
ns1.ptb.de
  • Serial: 2024080564
  • Refresh: 1200
  • Retry: 3600
  • Expire: 604800
  • Minimum TTL: 86400
dns-1.dfn.de
  • Serial: 2024080564
  • Refresh: 1200
  • Retry: 3600
  • Expire: 604800
  • Minimum TTL: 86400

Serial: 2024080564 - OK

REFRESH: 1200 - OK

RETRY: 3600 - OK

EXPIRE: 604800 - OK

MINIMUM TTL: 86400 - Note: Outside recommended range (1-3 hours)

MX Records

dns-3.dfn.de
dns-2.dfn.de
ns1.ptb.de
dns-1.dfn.de

MX Record Consistency - OK

MX Record Count - OK

Reverse MX A records (PTR)

  • 97.94.94.194.in-addr.arpa -> MX1.Berlin.PTB.DE
  • 120.103.53.192.in-addr.arpa -> mx1.bs.ptb.de

PTR Records - OK

DNSSEC

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

DNSSEC - OK

SPF (Sender Policy Framework)

SPF Record Published: Passed

Multiple SPF Records: Passed

SPF Record 1:
  • Record: v=spf1 ip4:192.53.103.120/32 ip4:194.94.94.97/32 ip6:2001:638:610:bd01::120/128 ip6:2001:638:610:cdce::61/128 include:spf.smtp.net ~all
  • SPF Syntax: Passed
  • Deprecated Elements: Passed
  • IP Addresses: 192.53.103.120/32, 194.94.94.97/32, 2001:638:610:bd01::120/128, 2001:638:610:cdce::61/128
  • Includes: spf.smtp.net
  • DNS Lookups: 2
  • Void Lookups: Passed
  • Escaping Chars: Not Present
  • All Mechanism: ~all

DKIM (DomainKeys Identified Mail)

  • DKIM Records Found: Yes
  • Selectors Found: smtp
  • Selector 'smtp':
    Record: v=DKIM1; k=rsa; p=
  • Valid Syntax: Yes

DMARC

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