visa.de

Checked 22 October 2026, 00:52 UTC · via 8.8.8.8
!Passed with warnings
22 passed 2 warnings 0 failed 5 info

Registration

info

.de country-code

Found

TLD
.de (country-code)
ICANN policies apply
no

Checks

  • i
    .de is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .de is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

ns1.dnsvisa.com, ns2.dnsvisa.com, ns3.dnsvisa.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.dnsvisa.com, ns2.dnsvisa.com, ns3.dnsvisa.com
NS in the zone
ns1.dnsvisa.com, ns2.dnsvisa.com, ns3.dnsvisa.com
NameserverAddressesNetwork (AS)Glue
ns1.dnsvisa.com162.159.9.153 2400:cb00:2049:1::a29f:999AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns2.dnsvisa.com162.159.8.235 2400:cb00:2049:1::a29f:8ebAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
ns3.dnsvisa.com162.159.11.57 2400:cb00:2049:1::a29f:b39AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.dnsvisa.com, ns2.dnsvisa.com, ns3.dnsvisa.com.
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2400:cb00:2049::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 6 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 .com
    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

warn

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.dnsvisa.com 162.159.9.153NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns1.dnsvisa.com 2400:cb00:2049:1::a29f:999NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2.dnsvisa.com 162.159.8.235NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns2.dnsvisa.com 2400:cb00:2049:1::a29f:8ebNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns3.dnsvisa.com 162.159.11.57NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns3.dnsvisa.com 2400:cb00:2049:1::a29f:b39NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 6 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.dnsvisa.com: "2026.10.2"; ns2.dnsvisa.com: "2026.10.2"; ns3.dnsvisa.com: "2026.10.2". Hide or replace the version string.
    #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 2412797942 · primary ns1.dnsvisa.com

Found

Primary (MNAME)
ns1.dnsvisa.com
Contact (RNAME)
dns.cloudflare.com
Serial
2412797942
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ns1.dnsvisa.com (162.159.9.153)2412797942
ns1.dnsvisa.com (2400:cb00:2049:1::a29f:999)2412797942
ns2.dnsvisa.com (162.159.8.235)2412797942
ns2.dnsvisa.com (2400:cb00:2049:1::a29f:8eb)2412797942
ns3.dnsvisa.com (162.159.11.57)2412797942
ns3.dnsvisa.com (2400:cb00:2049:1::a29f:b39)2412797942

Checks

  • ✓ Serial 2412797942 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dnsvisa.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2412797942 is a Unix timestamp (2046-06-16 21:39 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

pass

15 records at the apex

Found

Read from
162.159.9.153:53
TypeValueTTL
SOAns1.dnsvisa.com. dns.cloudflare.com. 2412797942 10000 2400 604800 18001800
NSns1.dnsvisa.com.86400
NSns2.dnsvisa.com.86400
NSns3.dnsvisa.com.86400
A162.159.153.2300
A162.159.152.2300
MX10 visa-de.mail.protection.outlook.com.300
TXT"0 contactemail hostmaster@visa.com"300
TXT"3rw94sxsbk1wvpcmk69c71srttfnvt0x"300
TXT"5qh5ghz4kb6frm6fh8gm7dvtlx97b6ch"300
TXT"MS=ms94671907"300
TXT"facebook-domain-verification=p2uyk5yu6ee8573w7d3bv0h7pm67kw"300
TXT"v=spf1 include:mailgun.org include:spf.protection.outlook.com ~all"300
TXT"zone-ownership-verification-0ef0eaf91bce0b686cd57d8957e30db81f8fc14e51ba947a31484607aae73fef"300
CAA0 iodef "mailto:hostmaster@visa.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 1d.
  • ✓ 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: .