braunschweig.de

Checked 21 October 2026, 21:54 UTC · via 8.8.8.8
!Passed with warnings
20 passed 3 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

ns.braunschweig.de, ns2.braunschweig.de, ns2.icyteas.de, ns3.icyteas.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns.braunschweig.de, ns2.braunschweig.de, ns2.icyteas.de, ns3.icyteas.de
NS in the zone
ns.braunschweig.de, ns2.braunschweig.de, ns2.icyteas.de, ns3.icyteas.de
NameserverAddressesNetwork (AS)Glue
ns.braunschweig.de193.30.67.143AS9145 EWETEL - EWE TEL GmbH, DE193.30.67.143
ns2.braunschweig.de81.14.216.53AS13045 HTP-AS - htp GmbH, DE81.14.216.53
ns2.icyteas.de217.160.81.161 2001:8d8:fe:53:217:160:81:161AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE217.160.113.157 2001:8d8:580:401:217:160:113:157
ns3.icyteas.de185.132.35.161 2607:f1c0:fe:53:185:132:35:161AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB89.146.248.122 2a01:130:2000:118:89:146:248:122

Checks

  • ✓ 4 nameservers #6
    Delegated to ns.braunschweig.de, ns2.braunschweig.de, ns2.icyteas.de, ns3.icyteas.de.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns2.icyteas.de (glue 217.160.113.157, 2001:8d8:580:401:217:160:113:157, zone 217.160.81.161, 2001:8d8:fe:53:217:160:81:161); ns3.icyteas.de (glue 89.146.248.122, 2a01:130:2000:118:89:146:248:122, zone 185.132.35.161, 2607:f1c0:fe:53:185:132:35:161). 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 4 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS13045 (HTP-AS - htp GmbH, DE): 1 address; AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 2 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 2 addresses; AS9145 (EWETEL - EWE TEL GmbH, DE): 1 address.
  • 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: ns.braunschweig.de, ns2.braunschweig.de.
    #13

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.braunschweig.de 193.30.67.143NOERROR, 19 ms, authoritativenoyes / yesrefused-
ns2.braunschweig.de 81.14.216.53NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns2.icyteas.de 217.160.81.161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns2.icyteas.de 2001:8d8:fe:53:217:160:81:161NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.icyteas.de 185.132.35.161NOERROR, 3 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns3.icyteas.de 2607:f1c0:fe:53:185:132:35:161NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns2.icyteas.de: "Served by PowerDNS - https://www.powerdns.com/"; ns3.icyteas.de: "Served by PowerDNS - https://www.powerdns.com/".
    #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

warn

serial 2026101102 · primary ns.braunschweig.de

Found

Primary (MNAME)
ns.braunschweig.de
Contact (RNAME)
hostmaster.braunschweig.de
Serial
2026101102
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
38400 s

Serial per nameserver

NameserverSerial
ns.braunschweig.de (193.30.67.143)2026101102
ns2.braunschweig.de (81.14.216.53)2026071501
ns2.icyteas.de (217.160.81.161)2026101102
ns2.icyteas.de (2001:8d8:fe:53:217:160:81:161)2026101102
ns3.icyteas.de (185.132.35.161)2026101102
ns3.icyteas.de (2607:f1c0:fe:53:185:132:35:161)2026101102

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2026071501 on ns2.braunschweig.de (81.14.216.53); 2026101102 on ns.braunschweig.de (193.30.67.143), ns2.icyteas.de (217.160.81.161), ns2.icyteas.de (2001:8d8:fe:53:217:160:81:161), ns3.icyteas.de (185.132.35.161), ns3.icyteas.de (2607:f1c0:fe:53:185:132:35:161). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 640m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.braunschweig.de is one of the listed nameservers.
  • ✓ Contact hostmaster@braunschweig.de #25
    The SOA RNAME hostmaster.braunschweig.de means hostmaster@braunschweig.de.
  • ✓ Date-based serial #26
    The serial 2026101102 follows the YYYYMMDDnn convention (2026-10-11).

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
193.30.67.143:53
TypeValueTTL
SOAns.braunschweig.de. hostmaster.braunschweig.de. 2026101102 10800 3600 604800 38400300
NSns2.braunschweig.de.300
NSns.braunschweig.de.300
NSns2.icyteas.de.300
NSns3.icyteas.de.300
A193.30.67.141300
MX20 mailin01.braunschweig.de.300
MX10 mailin02.braunschweig.de.300
TXT"46acaa08c421cc4bc2dd7df8a0f9657a"300
TXT"cisco-ci-domain-verification=12585aca8469afb28d610330f736a60a47072228fbf3abc87e2ba5bc34a2c2b8"300
TXT"v=spf1 a:mailout.braunschweig.de include:_spf.kdo.de a:mx2.zebralog.net a:kalium.zebralog.net a:sendgrid.net a:mail4.nethotels.com a:relay1.iserv.eu a:relay2.iserv.eu ~all"300
TXT"MS=ms75861244"300
TXT"google-site-verification=YHctDYktJ_hNX1fGBbwDDPm-HjoS8p7PUGwOTEMzxD4"300
TXT"apple-domain-verification=jlcWnwjD0yjx1Jfq"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 1d and in the zone 5m; 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.
  • 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