DNS Report: dfn.de

Generated: 2026-08-11T06:27:57-05:00

87/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
OKIPv6 (AAAA)10/101 IPv6 address(es) detected.
OKName server redundancy20/204 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
OKDNSSEC chain15/15DS and DNSKEY detected.
ERRORCAA policy0/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/203 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/5528 day(s) remaining.
WARNINGCertificate lifetime6/10Full points require at least 30 days remaining.
WARNINGHTTP security headers4/351 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: www.dfn.de
WARNINGIPv4 diversity20/35Two or more IPv4 addresses receive full points.
OKIPv6 connectivity35/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
37.208.106.105
AAAA
2a00:d0c0:c:2109::11
CNAME
MX
10 b1001.mx.srv.dfn.de.
10 c1001.mx.srv.dfn.de.
10 a1001.mx.srv.dfn.de.
TXT
"google-site-verification=aNjf9WiXv4G4mjXnYovwIjOS01qfUjBGQbV5xomVJ44"
"apple-domain-verification=TdQByV6omDQj06SD"
"google-site-verification=AHsv25T5W2sYiYNmYvU6z8a2G1H_7FM0vJOZf5uOhAE"
"v=spf1 include:_spf.s1004.mx.srv.dfn.de a:deneb.dfn.de include:_spf.dfn-cert.de include:_spft.telekom.com ~all"
NS
ns1.dfn.de.
ns4.dfn.de.
ns3.dfn.de.
ns2.dfn.de.
SOA
ns1.dfn.de. hostmaster.dfn.de. 1786443368 28800 7200 3024000 3600
CAA
DS
52345 13 2 CB45E805D6DE033CD632640B0E75E01DA9D9DE19FF70B6FCBB233DAB 802D5F16
DNSKEY
257 3 13 m3JcLlX53CVTANTFIhPcqt5TQoggiO0jecgtrvZrNCUb0Ua7jVCp5D+m c/O2WC+DATwwHjtEAruUS+qxmdy8LA==
256 3 13 2qMruUzdhGnYT4JaXoJQ5iIKt4hQ7xj4GDUNblUtOlcVJSYlSzPsKruJ ddmM7AgPRh5g7NwUeN3D7Gb/4q4c9g==
RRSIG
DNSKEY 13 2 60 20260830040854 20260731035437 52345 dfn.de. f/jPPRB4QTI6h1ntFlSIgP8FmbT5VSynkiLVhPyiCcz/5rIpkqpmZpvt pqIHWfAgLO3jKB9ZlFYY7abARwm4Dg==
AAAA 13 2 86400 20260908114137 20260809105515 15867 dfn.de. ykduL7UVyQPXvFJ8TSZ5INnRdGPzdBv1V5bO2UEsFq9KrIVTh3Q9gZFY yaa1XNv/k0KlGeVRu3g+5EvdjSznLg==
MX 13 2 86400 20260901090450 20260802082932 15867 dfn.de. Ue+d6bYmiCRWQJ+Ag7pKzxUz2OSCwBcGGLZXQuioUGJ25zg7oQCqOn8n UC01I8VOiBeR/hkCeYO5hFU2+5a0JA==
A 13 2 86400 20260908114137 20260809105515 15867 dfn.de. f9GpolnCDHjRNxNVxgknl3kTLlyTDmVG1ME4A6rGKHIgUGL1glzGkgEy JnXa9W8ZfEfijBvdIMzpoKOae2szMw==
DS 8 2 86400 20260817120903 20260803103903 32911 de. omfr3rKdEN/rCNZ+lq3FhrpIRjv7u9mhCZ5RyuLhplKyMN1ug5eKesom iob3n3gbBBVUyF1ohwoVgyPMSvFrPZJpXTEgwflWUAby2nBpzWntzjB1 K0mmo6iWrvkvOIoaJBUtTgeZHRULkwJNiQ54Pqca+XOUoXtbDVT6whfa cN4=
NS 13 2 86400 20260907150145 20260808141824 15867 dfn.de. 9+UhbHpQjWx4hGsUUyHa0di1BibCZEvemJuAsnFseL/TeyRRIWvXeBlG FjXN6DCzMfVaqGaKvryFLk35diCHog==
NSEC
_dmarc.dfn.de. A NS SOA MX TXT AAAA NAPTR RRSIG NSEC DNSKEY TYPE65534
NSEC3
SRV
NAPTR
100 10 "s" "x-eduroam:radius.tls" "" _radsec._tcp.eduroam.de.
TLSA
SSHFP