postbank.de

Checked 21 October 2026, 23:50 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 3 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.db-dns.de, ns10.db-dns.de, ns11.db-dns.com, ns12.db-dns.de, ns13.db-dns.com, ns14.db-dns.de, ns15.db-dns.com, ns2.db-dns.com, ns3.db-dns.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.db-dns.de, ns10.db-dns.de, ns11.db-dns.com, ns12.db-dns.de, ns13.db-dns.com, ns14.db-dns.de, ns15.db-dns.com, ns2.db-dns.com, ns3.db-dns.de
NS in the zone
ns1.db-dns.de, ns10.db-dns.de, ns11.db-dns.com, ns12.db-dns.de, ns13.db-dns.com, ns14.db-dns.de, ns15.db-dns.com, ns2.db-dns.com, ns3.db-dns.de
NameserverAddressesNetwork (AS)Glue
ns1.db-dns.de160.83.56.161 2a00:c00:f060:1::100AS15769 UNSPECIFIED - Deutsche Bank AG, DE AS15769 UNSPECIFIED - Deutsche Bank AG, DE160.83.56.161 2a00:c00:f060:1::100
ns10.db-dns.de193.108.91.46 2600:1401:2::2eAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL193.108.91.46 2600:1401:2::2e
ns11.db-dns.com96.7.50.65AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns12.db-dns.de95.101.36.66AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns13.db-dns.com84.53.139.66 2600:1480:1::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns14.db-dns.de23.74.25.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL23.74.25.64
ns15.db-dns.com95.100.168.65 2600:1480:b000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns2.db-dns.com202.21.227.113 2a00:c00:f030:1::100AS24467 DB-APAC-RHO-AS - Deutsche Bank APAC RHO in Singapore Internet AS, SG AS24467 DB-APAC-RHO-AS - Deutsche Bank APAC RHO in Singapore Internet AS, SG-
ns3.db-dns.de202.21.223.113 2a00:c00:f032:1::100AS24467 DB-APAC-RHO-AS - Deutsche Bank APAC RHO in Singapore Internet AS, SG AS24467 DB-APAC-RHO-AS - Deutsche Bank APAC RHO in Singapore Internet AS, SG-

Checks

  • ✓ 9 nameservers #6
    Delegated to ns1.db-dns.de, ns10.db-dns.de, ns11.db-dns.com, ns12.db-dns.de, ns13.db-dns.com, ns14.db-dns.de, ns15.db-dns.com, ns2.db-dns.com, ns3.db-dns.de.
  • ✓ 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 9 IPv4 /24s and 6 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS15769 (UNSPECIFIED - Deutsche Bank AG, DE): 2 addresses; AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 8 addresses; AS24467 (DB-APAC-RHO-AS - Deutsche Bank APAC RHO in Singapore Internet AS, SG): 4 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .de.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns11.db-dns.com, ns12.db-dns.de, ns14.db-dns.de.
    #13

Nameservers

warn

15 of 15 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.db-dns.de 160.83.56.161NOERROR, 24 ms, authoritativenoyes / yesrefused-
ns1.db-dns.de 2a00:c00:f060:1::100NOERROR, 19 ms, authoritativenoyes / yesrefused-
ns10.db-dns.de 193.108.91.46NOERROR, 3 ms, authoritativenoyes / yesrefused41824.8
ns10.db-dns.de 2600:1401:2::2eNOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
ns11.db-dns.com 96.7.50.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
ns12.db-dns.de 95.101.36.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
ns13.db-dns.com 84.53.139.66NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
ns13.db-dns.com 2600:1480:1::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.10
ns14.db-dns.de 23.74.25.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
ns15.db-dns.com 95.100.168.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.8
ns15.db-dns.com 2600:1480:b000::41NOERROR, 3 ms, authoritativenoyes / yesrefused41824.10
ns2.db-dns.com 202.21.227.113NOERROR, 251 ms, authoritativenoyes / yesrefusednone
ns2.db-dns.com 2a00:c00:f030:1::100NOERROR, 163 ms, authoritativenoyes / yesrefusednone
ns3.db-dns.de 202.21.223.113NOERROR, 159 ms, authoritativenoyes / yesrefused-
ns3.db-dns.de 2a00:c00:f032:1::100NOERROR, 165 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 15 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: ns10.db-dns.de: "41824.8"; ns10.db-dns.de: "41824.11"; ns11.db-dns.com: "48878.27"; ns12.db-dns.de: "48878.27"; ns13.db-dns.com: "41824.5"; ns13.db-dns.com: "41824.10"; ns14.db-dns.de: "48878.27"; ns15.db-dns.com: "41824.8"; ns15.db-dns.com: "41824.10". 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 2024021927 · primary ns1.db-dns.de

Found

Primary (MNAME)
ns1.db-dns.de
Contact (RNAME)
hostmaster.db.com
Serial
2024021927
Refresh / retry
10800 s / 3600 s
Expire
2419200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.db-dns.de (160.83.56.161)2024021927
ns1.db-dns.de (2a00:c00:f060:1::100)2024021927
ns10.db-dns.de (193.108.91.46)2024021927
ns10.db-dns.de (2600:1401:2::2e)2024021927
ns11.db-dns.com (96.7.50.65)2024021927
ns12.db-dns.de (95.101.36.66)2024021927
ns13.db-dns.com (84.53.139.66)2024021927
ns13.db-dns.com (2600:1480:1::42)2024021927
ns14.db-dns.de (23.74.25.64)2024021927
ns15.db-dns.com (95.100.168.65)2024021927
ns15.db-dns.com (2600:1480:b000::41)2024021927
ns2.db-dns.com (202.21.227.113)2024021927
ns2.db-dns.com (2a00:c00:f030:1::100)2024021927
ns3.db-dns.de (202.21.223.113)2024021927
ns3.db-dns.de (2a00:c00:f032:1::100)2024021927

Checks

  • ✓ Serial 2024021927 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 28d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.db-dns.de is one of the listed nameservers.
  • ✓ Contact hostmaster@db.com #25
    The SOA RNAME hostmaster.db.com means hostmaster@db.com.
  • ✓ Date-based serial #26
    The serial 2024021927 follows the YYYYMMDDnn convention (2024-02-19).

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

34 records at the apex

Found

Read from
160.83.56.161:53
TypeValueTTL
SOAns1.db-dns.de. hostmaster.db.com. 2024021927 10800 3600 2419200 3001800
NSns3.db-dns.de.1800
NSns2.db-dns.com.1800
NSns1.db-dns.de.1800
NSns15.db-dns.com.1800
NSns14.db-dns.de.1800
NSns13.db-dns.com.1800
NSns12.db-dns.de.1800
NSns11.db-dns.com.1800
NSns10.db-dns.de.1800
A160.83.8.1821800
MX10 smtp26.db.com.1800
MX10 smtp16.db.com.1800
TXT"v=spf1 ip4:160.83.0.0/16 -all"1800
TXT"_globalsign-domain-verification=RTR1SFmhiIsX1Ri576xPeAZ0pHbq59sgDjp7v98CBX"1800
TXT"_globalsign-domain-verification=Zpizl_ML3jn94Pka2MreQ3oSyBRRtmgxikOdoAq-BF"1800
TXT"facebook-domain-verification=292ti93ivi510hfsykvuwb24b0qgbz"1800
TXT"swisssign-check=9O7I7CErJ3HEO1RBbouu17ACsXYjfaaM41qrxtME9v"1800
TXT"QuoVadis=2e73a12d-11e1-417b-815f-668e13d75ca1"1800
TXT"swisssign-check=8ope21sWD94gVPvKJOKRxIElxkI"1800
TXT"apple-domain-verification=JwK9xWedA5J0aP8h"1800
TXT"rrz5mg223ctd14lg3l6txv2tn31j42tn"1800
TXT"h2czl1d3zmpjq7phgsc70cmmyn2b29qg"1800
TXT"4p9f8tz7pqn2ygwlktp79frwzfp0kgbs"1800
TXT"376yg2qg89n3blzfrkxkyn02bnf9d0xg"1800
TXT"976195009789c189cec7aa8c31c67c"1800
TXT"MS=ms83859239"1800
TXT"_globalsign-domain-verification=RQWdWY2xkLlA6y_bX9A_ecY3BuOvx1vqKAdi1s2iU9"1800
CAA0 issue "letsencrypt.org"1800
CAA0 issuewild ";"1800
CAA0 issue "digicert.com"1800
CAA0 issue "quovadisglobal.com"1800
CAA0 issue "globalsign.com"1800
CAA0 issue "amazon.com"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 30m, MX 30m, NS 30m. The NS TTL at the parent is 1d and in the zone 30m; 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: letsencrypt.org, none (issuance forbidden), digicert.com, quovadisglobal.com, globalsign.com, amazon.com.