united-internet.de

Checked 22 October 2026, 00:50 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 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

pass

ns-ui.ui-dns.biz, ns-ui.ui-dns.com, ns-ui.ui-dns.de, ns-ui.ui-dns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-ui.ui-dns.biz, ns-ui.ui-dns.com, ns-ui.ui-dns.de, ns-ui.ui-dns.org
NS in the zone
ns-ui.ui-dns.biz, ns-ui.ui-dns.com, ns-ui.ui-dns.de, ns-ui.ui-dns.org
NameserverAddressesNetwork (AS)Glue
ns-ui.ui-dns.biz217.160.81.216 185.132.33.216 2607:f1c0:fe:53:185:132:33:216 2001:8d8:fe:53:0:d9a0:51d8:100AS8560 IONOS-AS - IONOS SE, DE AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS8560 IONOS-AS - IONOS SE, DE-
ns-ui.ui-dns.com217.160.82.216 185.132.34.216 2607:f1c0:fe:53:185:132:34:216 2001:8d8:fe:53:0:d9a0:52d8:100AS8560 IONOS-AS - IONOS SE, DE AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS8560 IONOS-AS - IONOS SE, DE-
ns-ui.ui-dns.de185.132.32.216 217.160.80.216 2607:f1c0:fe:53:185:132:32:216 2001:8d8:fe:53:0:d9a0:50d8:100AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS8560 IONOS-AS - IONOS SE, DE AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS8560 IONOS-AS - IONOS SE, DE-
ns-ui.ui-dns.org217.160.83.216 185.132.35.216 2607:f1c0:fe:53:185:132:35:216 2001:8d8:fe:53:0:d9a0:53d8:100AS8560 IONOS-AS - IONOS SE, DE AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS8560 IONOS-AS - IONOS SE, DE-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-ui.ui-dns.biz, ns-ui.ui-dns.com, ns-ui.ui-dns.de, ns-ui.ui-dns.org.
  • ✓ 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 8 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 8 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 8 addresses.
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .biz, .com, .de, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-ui.ui-dns.biz 217.160.81.216NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.biz 185.132.33.216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.biz 2607:f1c0:fe:53:185:132:33:216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.biz 2001:8d8:fe:53:0:d9a0:51d8:100NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.com 217.160.82.216NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.com 185.132.34.216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.com 2607:f1c0:fe:53:185:132:34:216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.com 2001:8d8:fe:53:0:d9a0:52d8:100NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.de 185.132.32.216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.de 217.160.80.216NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.de 2607:f1c0:fe:53:185:132:32:216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.de 2001:8d8:fe:53:0:d9a0:50d8:100NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.org 217.160.83.216NOERROR, 9 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.org 185.132.35.216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.org 2607:f1c0:fe:53:185:132:35:216NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
ns-ui.ui-dns.org 2001:8d8:fe:53:0:d9a0:53d8:100NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

Checks

  • ✓ All respond #14
    All 16 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: ns-ui.ui-dns.biz: "Served by PowerDNS - https://www.powerdns.com/"; ns-ui.ui-dns.com: "Served by PowerDNS - https://www.powerdns.com/"; ns-ui.ui-dns.de: "Served by PowerDNS - https://www.powerdns.com/"; ns-ui.ui-dns.org: "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

pass

serial 2015120705 · primary ns-ui.ui-dns.com

Found

Primary (MNAME)
ns-ui.ui-dns.com
Contact (RNAME)
dnsadmin.1und1.de
Serial
2015120705
Refresh / retry
14400 s / 3600 s
Expire
605000 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns-ui.ui-dns.biz (217.160.81.216)2015120705
ns-ui.ui-dns.biz (185.132.33.216)2015120705
ns-ui.ui-dns.biz (2607:f1c0:fe:53:185:132:33:216)2015120705
ns-ui.ui-dns.biz (2001:8d8:fe:53:0:d9a0:51d8:100)2015120705
ns-ui.ui-dns.com (217.160.82.216)2015120705
ns-ui.ui-dns.com (185.132.34.216)2015120705
ns-ui.ui-dns.com (2607:f1c0:fe:53:185:132:34:216)2015120705
ns-ui.ui-dns.com (2001:8d8:fe:53:0:d9a0:52d8:100)2015120705
ns-ui.ui-dns.de (185.132.32.216)2015120705
ns-ui.ui-dns.de (217.160.80.216)2015120705
ns-ui.ui-dns.de (2607:f1c0:fe:53:185:132:32:216)2015120705
ns-ui.ui-dns.de (2001:8d8:fe:53:0:d9a0:50d8:100)2015120705
ns-ui.ui-dns.org (217.160.83.216)2015120705
ns-ui.ui-dns.org (185.132.35.216)2015120705
ns-ui.ui-dns.org (2607:f1c0:fe:53:185:132:35:216)2015120705
ns-ui.ui-dns.org (2001:8d8:fe:53:0:d9a0:53d8:100)2015120705

Checks

  • ✓ Serial 2015120705 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 168h3m20s, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-ui.ui-dns.com is one of the listed nameservers.
  • ✓ Contact dnsadmin@1und1.de #25
    The SOA RNAME dnsadmin.1und1.de means dnsadmin@1und1.de.
  • ✓ Date-based serial #26
    The serial 2015120705 follows the YYYYMMDDnn convention (2015-12-07).

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

34 records at the apex

Found

Read from
217.160.81.216:53
TypeValueTTL
SOAns-ui.ui-dns.com. dnsadmin.1und1.de. 2015120705 14400 3600 605000 60086400
NSns-ui.ui-dns.de.172800
NSns-ui.ui-dns.com.172800
NSns-ui.ui-dns.biz.172800
NSns-ui.ui-dns.org.172800
A217.160.86.44300
A217.160.86.68300
MX10 mxint02.1and1.com.86400
MX10 mxint01.1and1.com.86400
TXT"MS=ms96928915"3600
TXT"_telesec-domain-validation=FE7BA032C87290375A3029A01991C05CDAF69A49367DD7E800C2F1652BDE80EB"300
TXT"google-site-verification=LPltWsvCFKytIFb2_CJH_o7P38NGc-5oZsL214kU1tU"86400
TXT"86400" "atlassian-domain-verification=KAEkvhtoErKIDdiyb7e0wzavuISNOteHVzuoJX6M4VNN5REeLHY0BhBUYNFjFEt9"86400
TXT"docusign=bac24c7f-ea67-4c31-8571-03382862fa55"86400
TXT"google-site-verification=7Tx-f0DOvjzbkkdq1zfVLkcdKRrccnhFmBbNAqa3so8"86400
TXT"491ch2p7z1dxh998wysjht3x5b0pph4m"86400
TXT"apple-domain-verification=gjMyeDOmoQoKdAqa"3600
TXT"docker-verification=ebf6a58c-6184-421d-b821-a67a26185c5e"86400
TXT"qz3p9jss72bwmws7cbt43b7qb1y88vm6"86400
TXT"w4pl30pwb2w8jrdvz2wqytv707yz607j"86400
TXT"adobe-idp-site-verification=544e1c199daf0cfa42a1fa60cc497471e9b14f4254769aae17f4d0fda9db275f"86400
TXT"knowbe4-site-verification=000df83216357fe9ea2188aff59f15d3"86400
TXT"knowbe4-site-verification=d0abd5d2499bdc5d7cb5157bbfda2fbb"86400
TXT"browserstack-domain-verification=236c704e-541f-43a4-a10f-eb51bb820499"86400
TXT"mindmanager-verification=1ea2fdbe5379cc0f8cfe95fa5ecfdc1ff943a7bd015aed8afb5717dad146adac"86400
TXT"_ak3w1wobh84yduivx001vftkb99fs8t"86400
TXT"canva-site-verification=hOGjXYzp3WpDVPJ1BfXXqg"86400
TXT"_2sr7gy0zeo7mpz3vzsyts042zj6mme0"86400
TXT"figma-domain-verification=bf994688b54b476ea25cff12b37502eef47a3bad935472aa4fbafa862e2c3c14-1750658762"86400
TXT"CFDNv4/rzkMxyp8Mi9FXwlpIES4tBm7GcksVctpYjoPuNCQdEhipdhNiIixm16GLBHRmHiWHGWSI7IeI2Mi/FQ=="120
TXT"v=spf1 include:_spf.1und1.de include:spf.mailjet.com include:_uicsspf.1und1.de include:a.spf.avature.net include:_spf.zimpel.de include:spf-inm.eqs-service.com include:spf.protection.outlook.com -all"3600
TXT"atlassian-domain-verification=ljsdBvFyTKIO6XpFPBCGTGbRO8oT5Na53jarsXV11E9LazG9e/zPf23LCa2SeevD"86400
TXT"jamf-site-verification=MYI3MooLyHdOX8ioJ19JlA"86400
TXT"ibmid=0a438757-7850-4d25-bca7-557535407a08"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1d, NS 2d. The NS TTL at the parent is 1d and in the zone 2d; 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