porsche.com

Checked 22 October 2026, 10:20 UTC · via 8.8.8.8
!Passed with warnings
29 passed 1 warning 0 failed 5 info

Registration

warn

.com generic · InterNetX GmbH · expires 2026-11-06

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
InterNetX GmbH
Registered
7 November 1996
Last changed
7 November 2025
Expires
6 November 2026
Status
client transfer prohibited
Registry nameservers
dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • !
    Expires in 14 days
    The registration expires on 2026-11-06. Make sure it is renewed.
    #3
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net
NS in the zone
dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net
NameserverAddressesNetwork (AS)Glue
dns1.p09.nsone.net198.51.44.9 2620:4d:4000:6259:7:9:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns2.p09.nsone.net198.51.45.9 2a00:edc0:6259:7:9::2AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns3.p09.nsone.net198.51.44.73 2620:4d:4000:6259:7:9:0:3AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns4.p09.nsone.net198.51.45.73 2a00:edc0:6259:7:9::4AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS62597 (NSONE - NSONE Inc, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .net
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.p09.nsone.net 198.51.44.9NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns1.p09.nsone.net 2620:4d:4000:6259:7:9:0:1NOERROR, 7 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p09.nsone.net 198.51.45.9NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p09.nsone.net 2a00:edc0:6259:7:9::2NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p09.nsone.net 198.51.44.73NOERROR, 7 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p09.nsone.net 2620:4d:4000:6259:7:9:0:3NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p09.nsone.net 198.51.45.73NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p09.nsone.net 2a00:edc0:6259:7:9::4NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9

Checks

  • ✓ All respond #14
    All 8 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: dns1.p09.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns2.p09.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns3.p09.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9"; dns4.p09.nsone.net: "19dd46e347df36b70933bf2be8023258586586a9".
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 1757407655 · primary dns1.p09.nsone.net

Found

Primary (MNAME)
dns1.p09.nsone.net
Contact (RNAME)
hostmaster.porsche.de
Serial
1757407655
Refresh / retry
10800 s / 1800 s
Expire
2592000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.p09.nsone.net (198.51.44.9)1757407655
dns1.p09.nsone.net (2620:4d:4000:6259:7:9:0:1)1757407655
dns2.p09.nsone.net (198.51.45.9)1757407655
dns2.p09.nsone.net (2a00:edc0:6259:7:9::2)1757407655
dns3.p09.nsone.net (198.51.44.73)1757407655
dns3.p09.nsone.net (2620:4d:4000:6259:7:9:0:3)1757407655
dns4.p09.nsone.net (198.51.45.73)1757407655
dns4.p09.nsone.net (2a00:edc0:6259:7:9::4)1757407655

Checks

  • ✓ Serial 1757407655 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 30m, expire 30d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.p09.nsone.net is one of the listed nameservers.
  • ✓ Contact hostmaster@porsche.de #25
    The SOA RNAME hostmaster.porsche.de means hostmaster@porsche.de.
  • ✓ Timestamp serial #26
    The serial 1757407655 is a Unix timestamp (2025-09-09 08:47 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
48553ECDSAP256SHA256 (13)SHA256 F8797A14738FD373…yes

DNSKEY in the zone

Key tagRoleAlgorithm
48553KSK (257)ECDSAP256SHA256 (13)
12196ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 48553 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 26h0m0s and created on demand; the current one was made at 2026-10-22 09:20 UTC and expires at 2026-10-23 11:20 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

pass

29 records at the apex

Found

Read from
198.51.44.9:53
TypeValueTTL
SOAdns1.p09.nsone.net. hostmaster.porsche.de. 1757407655 10800 1800 2592000 36003600
NSdns1.p09.nsone.net.3600
NSdns2.p09.nsone.net.3600
NSdns3.p09.nsone.net.3600
NSdns4.p09.nsone.net.3600
A40.91.205.218300
MX10 mail02.fw.porsche.de.3600
MX20 mail.fw.porsche.de.3600
TXT"spf2.0/pra ?all"3600
TXT"v=spf1 include:spf.porsche.de -all"3600
TXT"sendinblue-site-verification=3146095"3600
TXT"QuoVadis=26a26342-5388-4e4a-b460-e054613c4e41"3600
TXT"QuoVadis=53b9377f-2a30-4e9e-ba35-0b74a0823c85"3600
TXT"72E0E0D5-D8FF-4D8A-ABDE-AF0A741A2125_16.10.2018"3600
TXT"Sendinblue-code:4858d92d6087885f311405188c69009f"3600
TXT"facebook-domain-verification=ca40fjq16yz0gqugay9lucpdlennlx"3600
TXT"google-site-verification=_zTWU8IDqxTbXpM2-U4UhlGMQu5LZHtlo2JTTH2kwqU"3600
TXT"QuoVadis=9ece7b44-8831-4feb-baec-9bd464b4611e"3600
TXT"QuoVadis=8fcac74a-e9ff-4f95-acfe-f736d6685b1a"3600
TXT"google-site-verification=mPpLM-eerii63JiM-ry3LEcg3BWe9PkpDyWj75_G3SA"3600
TXT"google-site-verification=g0o4ln9pj8_4jQsBUoIvBS3pfYf7ePRzDjJSN_CFNOA"3600
TXT"dtm-domain-verification=uaV3iNdyFztyimirsDrSTUYRWPLnc2VDzET3MF8Dklg"3600
TXT"google-site-verification=fOAMhBj8zj99argVVRLj-AUwAkoJaT1-JVOYnsthH8M"3600
CAA0 iodef "mailto:certadm@porsche.de"3600
CAA0 issue "amazon.com"3600
CAA0 issue "digicert.com"3600
CAA0 issue "quovadisglobal.com"3600
CAA0 issue "sectigo.com"3600
CAA0 issuewild ";"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, digicert.com, quovadisglobal.com, sectigo.com, none (issuance forbidden).