deutsches-schulportal.de

Checked 21 October 2026, 22:13 UTC · via 8.8.8.8
!Passed with warnings
19 passed 4 warnings 0 failed 6 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

warn

gwa.fe.bosch.de, gwa2.fe.bosch.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
gwa.fe.bosch.de, gwa2.fe.bosch.de
NS in the zone
gwa.fe.bosch.de, gwa2.fe.bosch.de, ns1.fe.bosch.de, ns2.fe.bosch.de, ns3.fe.bosch.de, ns4.fe.bosch.de, ns5.fe.bosch.de, ns6.fe.bosch.de
NameserverAddressesNetwork (AS)Glue
gwa.fe.bosch.de194.39.219.2 2a03:cc00:ff0:2f02::10 2a03:cc00:ff0:200a::dAS9183 UNSPECIFIED - Robert Bosch Gesellschaft mit Beschraenkter Haftung, DE AS9183 UNSPECIFIED - Robert Bosch Gesellschaft mit Beschraenkter Haftung, DE AS9183 UNSPECIFIED - Robert Bosch Gesellschaft mit Beschraenkter Haftung, DE194.39.219.2 2a03:cc00:ff0:2f02::10
gwa2.fe.bosch.de103.4.124.215 2401:d00:ff0:2f01::11 2401:d00:ff0:2003::8AS133466 BOSCH-NET-AP - Robert Bosch GmbH, SG AS133466 BOSCH-NET-AP - Robert Bosch GmbH, SG AS133466 BOSCH-NET-AP - Robert Bosch GmbH, SG103.4.124.215 2401:d00:ff0:2f01::11
ns1.fe.bosch.de (zone only)193.108.91.70 2600:1401:1::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns2.fe.bosch.de (zone only)95.101.36.66 2600:1480:b000::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns3.fe.bosch.de (zone only)96.7.49.64 2600:1480:7800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns4.fe.bosch.de (zone only)72.246.46.67 2600:1480:800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns5.fe.bosch.de (zone only)2.16.40.66 2600:1401:2::5AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns6.fe.bosch.de (zone only)184.85.248.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: gwa.fe.bosch.de, gwa2.fe.bosch.de.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only in the zone: ns1.fe.bosch.de, ns2.fe.bosch.de, ns3.fe.bosch.de, ns4.fe.bosch.de, ns5.fe.bosch.de, ns6.fe.bosch.de. gwa.fe.bosch.de, gwa2.fe.bosch.de, ns1.fe.bosch.de, ns2.fe.bosch.de, ns3.fe.bosch.de, ns4.fe.bosch.de, ns5.fe.bosch.de, ns6.fe.bosch.de report NS gwa.fe.bosch.de gwa2.fe.bosch.de ns1.fe.bosch.de ns2.fe.bosch.de ns3.fe.bosch.de ns4.fe.bosch.de ns5.fe.bosch.de ns6.fe.bosch.de.
    #7
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: gwa.fe.bosch.de (glue 194.39.219.2, 2a03:cc00:ff0:2f02::10, zone 194.39.219.2, 2a03:cc00:ff0:2f02::10, 2a03:cc00:ff0:200a::d); gwa2.fe.bosch.de (glue 103.4.124.215, 2401:d00:ff0:2f01::11, zone 103.4.124.215, 2401:d00:ff0:2f01::11, 2401:d00:ff0:2003::8). Update the glue at your registrar.
    #8
  • ✓ 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 8 IPv4 /24s and 7 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS133466 (BOSCH-NET-AP - Robert Bosch GmbH, SG): 3 addresses; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses; AS9183 (UNSPECIFIED - Robert Bosch Gesellschaft mit Beschraenkter Haftung, DE): 3 addresses.
  • i
    All nameserver names under .de
    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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns6.fe.bosch.de.
    #13

Nameservers

warn

17 of 17 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
gwa.fe.bosch.de 194.39.219.2NOERROR, 9 ms, authoritativenoyes / yesrefused-
gwa.fe.bosch.de 2a03:cc00:ff0:2f02::10NOERROR, 9 ms, authoritativenoyes / yesrefused-
gwa.fe.bosch.de 2a03:cc00:ff0:200a::dNOERROR, 9 ms, authoritativenoyes / yesrefused-
gwa2.fe.bosch.de 103.4.124.215NOERROR, 187 ms, authoritativenoyes / yesrefused-
gwa2.fe.bosch.de 2401:d00:ff0:2f01::11NOERROR, 188 ms, authoritativenoyes / yesrefused-
gwa2.fe.bosch.de 2401:d00:ff0:2003::8NOERROR, 181 ms, authoritativenoyes / yesrefused-
ns1.fe.bosch.de 193.108.91.70NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
ns1.fe.bosch.de 2600:1401:1::43NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
ns2.fe.bosch.de 95.101.36.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
ns2.fe.bosch.de 2600:1480:b000::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
ns3.fe.bosch.de 96.7.49.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
ns3.fe.bosch.de 2600:1480:7800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
ns4.fe.bosch.de 72.246.46.67NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
ns4.fe.bosch.de 2600:1480:800::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
ns5.fe.bosch.de 2.16.40.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
ns5.fe.bosch.de 2600:1401:2::5NOERROR, 5 ms, authoritativenoyes / yesrefused41824.8
ns6.fe.bosch.de 184.85.248.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11

Checks

  • ✓ All respond #14
    All 17 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.fe.bosch.de: "41824.9"; ns1.fe.bosch.de: "48878.27"; ns2.fe.bosch.de: "48878.31"; ns2.fe.bosch.de: "41824.8"; ns3.fe.bosch.de: "41824.11"; ns3.fe.bosch.de: "48878.31"; ns4.fe.bosch.de: "48878.30"; ns4.fe.bosch.de: "41824.9"; ns5.fe.bosch.de: "48878.29"; ns5.fe.bosch.de: "41824.8"; ns6.fe.bosch.de: "41824.11". 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 2017082649 · primary gwa.fe.bosch.de

Found

Primary (MNAME)
gwa.fe.bosch.de
Contact (RNAME)
hostmaster.bosch.de
Serial
2017082649
Refresh / retry
86400 s / 7200 s
Expire
3600000 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
gwa.fe.bosch.de (194.39.219.2)2017082649
gwa.fe.bosch.de (2a03:cc00:ff0:2f02::10)2017082649
gwa.fe.bosch.de (2a03:cc00:ff0:200a::d)2017082649
gwa2.fe.bosch.de (103.4.124.215)2017082649
gwa2.fe.bosch.de (2401:d00:ff0:2f01::11)2017082649
gwa2.fe.bosch.de (2401:d00:ff0:2003::8)2017082649
ns1.fe.bosch.de (193.108.91.70)2017082649
ns1.fe.bosch.de (2600:1401:1::43)2017082649
ns2.fe.bosch.de (95.101.36.66)2017082649
ns2.fe.bosch.de (2600:1480:b000::42)2017082649
ns3.fe.bosch.de (96.7.49.64)2017082649
ns3.fe.bosch.de (2600:1480:7800::40)2017082649
ns4.fe.bosch.de (72.246.46.67)2017082649
ns4.fe.bosch.de (2600:1480:800::40)2017082649
ns5.fe.bosch.de (2.16.40.66)2017082649
ns5.fe.bosch.de (2600:1401:2::5)2017082649
ns6.fe.bosch.de (184.85.248.64)2017082649

Checks

  • ✓ Serial 2017082649 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 1000h, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver gwa.fe.bosch.de is one of the listed nameservers.
  • ✓ Contact hostmaster@bosch.de #25
    The SOA RNAME hostmaster.bosch.de means hostmaster@bosch.de.
  • ✓ Date-based serial #26
    The serial 2017082649 follows the YYYYMMDDnn convention (2017-08-26).

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

info

14 records at the apex

Found

Read from
194.39.219.2:53
TypeValueTTL
SOAgwa.fe.bosch.de. hostmaster.bosch.de. 2017082649 86400 7200 3600000 8640086400
NSns6.fe.bosch.de.86400
NSns2.fe.bosch.de.86400
NSgwa2.fe.bosch.de.86400
NSgwa.fe.bosch.de.86400
NSns5.fe.bosch.de.86400
NSns4.fe.bosch.de.86400
NSns3.fe.bosch.de.86400
NSns1.fe.bosch.de.86400
A116.202.200.23386400
AAAA2a01:4f8:d0a:7623::2600
MX10 dedi6949.your-server.de.300
TXT"v=spf1 ip4:116.202.200.233 a mx include:spf.crsend.com -all"86400
TXT"google-site-verification=KCwNzPE0UA6wlIww2jsuuHb6-q3WnazZ5sxf9HFVXf8"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, AAAA 10m, 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.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35