personio.de

Checked 21 October 2026, 23:50 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

ns-1105.awsdns-10.org, ns-1584.awsdns-06.co.uk, ns-46.awsdns-05.com, ns-988.awsdns-59.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-1105.awsdns-10.org, ns-1584.awsdns-06.co.uk, ns-46.awsdns-05.com, ns-988.awsdns-59.net
NS in the zone
ns-1105.awsdns-10.org, ns-1584.awsdns-06.co.uk, ns-46.awsdns-05.com, ns-988.awsdns-59.net
NameserverAddressesNetwork (AS)Glue
ns-1105.awsdns-10.org205.251.196.81 2600:9000:5304:5100::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1584.awsdns-06.co.uk205.251.198.48 2600:9000:5306:3000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-46.awsdns-05.com205.251.192.46 2600:9000:5300:2e00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-988.awsdns-59.net205.251.195.220 2600:9000:5303:dc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1105.awsdns-10.org, ns-1584.awsdns-06.co.uk, ns-46.awsdns-05.com, ns-988.awsdns-59.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-1105.awsdns-10.org 205.251.196.81NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1105.awsdns-10.org 2600:9000:5304:5100::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1584.awsdns-06.co.uk 205.251.198.48NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-1584.awsdns-06.co.uk 2600:9000:5306:3000::1NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-46.awsdns-05.com 205.251.192.46NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-46.awsdns-05.com 2600:9000:5300:2e00::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-988.awsdns-59.net 205.251.195.220NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-988.awsdns-59.net 2600:9000:5303:dc00::1NOERROR, 4 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-988.awsdns-59.net

Found

Primary (MNAME)
ns-988.awsdns-59.net
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-1105.awsdns-10.org (205.251.196.81)1
ns-1105.awsdns-10.org (2600:9000:5304:5100::1)1
ns-1584.awsdns-06.co.uk (205.251.198.48)1
ns-1584.awsdns-06.co.uk (2600:9000:5306:3000::1)1
ns-46.awsdns-05.com (205.251.192.46)1
ns-46.awsdns-05.com (2600:9000:5300:2e00::1)1
ns-988.awsdns-59.net (205.251.195.220)1
ns-988.awsdns-59.net (2600:9000:5303:dc00::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-988.awsdns-59.net 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

43 records at the apex

Found

Read from
205.251.196.81:53
TypeValueTTL
SOAns-988.awsdns-59.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1105.awsdns-10.org.172800
NSns-1584.awsdns-06.co.uk.172800
NSns-46.awsdns-05.com.172800
NSns-988.awsdns-59.net.172800
A76.76.21.2160
MX1 aspmx.l.google.com.86400
MX10 aspmx2.googlemail.com.86400
MX10 aspmx3.googlemail.com.86400
MX5 alt1.aspmx.l.google.com.86400
MX5 alt2.aspmx.l.google.com.86400
TXT"1password-site-verification=OADCDA2GENF37BSQFQDM6Q4DGA"3600
TXT"J97NCkZR"3600
TXT"MS=ms12660263"3600
TXT"O8onMF8hvDGkXmRQHvi6SrP4fxs94d7s"3600
TXT"ZOOM_verify_2PoguK6OTLW0qYLRCaFngg"3600
TXT"_9uhtjka4wbrkhiu9l08o169z4xv8tgk"3600
TXT"airtable-verification=2aa2a2f5af1bff05222cc789780b1b68"3600
TXT"anthropic-domain-verification-q97rpd=efNV34YYi7lRlNmrZrrDifDI9"3600
TXT"apple-domain-verification=PYYenM6SBLnHcmq0"3600
TXT"atlassian-domain-verification=jL4N855vWVyeBrFFX2Ky+jLkCigY5nPIWRlvym4n+DfxDP8nHvAmpxqjwK7qqzTy"3600
TXT"chargebee-verification=9-e?6i2Q[eRyCZLXxRDl"3600
TXT"docusign=500da8c6-c4e5-4602-8a76-7f24bb18b2f2"3600
TXT"easydmarc-verification:94d8101b-4e13-4ede-862e-5eedc78316b3"3600
TXT"fFC4lzkK"3600
TXT"facebook-domain-verification=ull2a1er8uysbs58hm4ssrf7s47kcb"3600
TXT"google-site-verification=ClONpa86tN1YPrDX_Hd8sIt5xsU7HoZ_RPKbSINCH9U"3600
TXT"google-site-verification=Gws4JeSH3oJic-5y19V5YGxo7KzHNVyv0jEEHv40MZk"3600
TXT"google-site-verification=MHjR1mGDNTFtxHhKrp_5McosZFxmry1THYBA_64Zj8g"3600
TXT"google-site-verification=PY0-n_83dtNyJF4L0RrVFjWPyGBRecl2hMyuBQPjOEM"3600
TXT"google-site-verification=UMZLeHpbUm36niI8orvXApz0eP7HlgXw_zUQguoJchU"3600
TXT"google-site-verification=cmAv9IvQ_JIWWr1fkF1div_5R3-V3Ecv46BN-I7-9Jc"3600
TXT"jamf-site-verification=4ySaY3elqqqukb0vFwwvPg"3600
TXT"knowbe4-site-verification=82a907d635e3becbb4e7f82de933f292"3600
TXT"loom-verification=9681221174"3600
TXT"mentimeter-d919c318-3e18-4beb-9fe6-4bd32884ceb1"3600
TXT"mgverify=d748d3be62b4f6f4eee84d3096f628d2abacabeebcd0ee10be02ad26b312b7b7"3600
TXT"miro-verification=d065210e0fa4241b053f4b7a78e7e63e20b25631"3600
TXT"notion_verify_FyJMWbKFgYfFstLteAMPGALmRMx5M3T5zf6Qeu3izszZVxQ1zjPGmc6Z9WVVDLsMn3edbV"3600
TXT"rs8kjvg5hdq44l4nnsi6il4csj"3600
TXT"stripe-verification=99900CDF22902D6A63F33CBA4F68D1A8439829CE91A933E27AB5A60842D3ACC1"3600
TXT"v=spf1 include:_spf.personio_de._d.easydmarc.pro ~all"3600
TXT"vercel-domain-verification-ven2zb=mti5fIYT0D3d8BOlpTa37wFhj"3600

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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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