bfv.de

Checked 21 October 2026, 21:40 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 4 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

ns-1088.awsdns-08.org, ns-1742.awsdns-25.co.uk, ns-296.awsdns-37.com, ns-913.awsdns-50.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-1088.awsdns-08.org, ns-1742.awsdns-25.co.uk, ns-296.awsdns-37.com, ns-913.awsdns-50.net
NS in the zone
ns-1088.awsdns-08.org, ns-1742.awsdns-25.co.uk, ns-296.awsdns-37.com, ns-913.awsdns-50.net
NameserverAddressesNetwork (AS)Glue
ns-1088.awsdns-08.org205.251.196.64 2600:9000:5304:4000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1742.awsdns-25.co.uk205.251.198.206 2600:9000:5306:ce00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-296.awsdns-37.com205.251.193.40 2600:9000:5301:2800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-913.awsdns-50.net205.251.195.145 2600:9000:5303:9100::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1088.awsdns-08.org, ns-1742.awsdns-25.co.uk, ns-296.awsdns-37.com, ns-913.awsdns-50.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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, 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
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1088.awsdns-08.org 205.251.196.64NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1088.awsdns-08.org 2600:9000:5304:4000::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1742.awsdns-25.co.uk 205.251.198.206NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1742.awsdns-25.co.uk 2600:9000:5306:ce00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-296.awsdns-37.com 205.251.193.40NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-296.awsdns-37.com 2600:9000:5301:2800::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-913.awsdns-50.net 205.251.195.145NOERROR, 6 ms, authoritativenoyes / yesrefused-
ns-913.awsdns-50.net 2600:9000:5303:9100::1NOERROR, 177 ms, authoritativenoyes / yesrefused-

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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 1 · primary ns-1088.awsdns-08.org

Found

Primary (MNAME)
ns-1088.awsdns-08.org
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1088.awsdns-08.org (205.251.196.64)1
ns-1088.awsdns-08.org (2600:9000:5304:4000::1)1
ns-1742.awsdns-25.co.uk (205.251.198.206)1
ns-1742.awsdns-25.co.uk (2600:9000:5306:ce00::1)1
ns-296.awsdns-37.com (205.251.193.40)1
ns-296.awsdns-37.com (2600:9000:5301:2800::1)1
ns-913.awsdns-50.net (205.251.195.145)1
ns-913.awsdns-50.net (2600:9000:5303:9100::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1088.awsdns-08.org is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

warn

13 records at the apex

Found

Read from
205.251.196.64:53
TypeValueTTL
SOAns-1088.awsdns-08.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1088.awsdns-08.org.172800
NSns-1742.awsdns-25.co.uk.172800
NSns-296.awsdns-37.com.172800
NSns-913.awsdns-50.net.172800
A46.163.95.21160
MX10 bfv-mail-02.bfv.de.300
TXT"06RfAHC0C4cylHJKpgB8PpAJ5/qWLN56oB39Xuk8gQXfQH3sQ+24K8OFwj9c0mB75oB+qEMn5EIbmY8Lty3o9w=="300
TXT"MS=ms81691319"300
TXT"apple-domain-verification=v2sQgBSTDOb8paZn"300
TXT"facebook-domain-verification=1x8hv1jc2usqynk4iz1wrcl59r5l2y"300
TXT"v=spf1 mx a:mail.bfv.de a:mailout1.dfbnet.org ip4:212.29.3.21 ip4:62.138.85.30 ip4:212.29.17.0/24 ip4:148.251.129.140 ip4:40.107.105.119 include:spf.protection.outlook.com include:spf.mailjet.com include:amazonses.com include:agenturserver.de -all"300
TXT"w9gw5hgzhc6nhq8vq3xk34hrcbn9jv12"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 2d; resolvers may use either.
    #32
  • ✓ 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