sat1.de

Checked 22 October 2026, 00:01 UTC · via 8.8.8.8
!Passed with warnings
21 passed 1 warning 0 failed 7 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

ns1.p7s1ns.de, ns2.p7s1ns.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.p7s1ns.de, ns2.p7s1ns.net
NS in the zone
ns1.p7s1ns.de, ns2.p7s1ns.net
NameserverAddressesNetwork (AS)Glue
ns1.p7s1ns.de192.174.68.103 2001:67c:1bc::103AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns2.p7s1ns.net176.97.158.103 2001:67c:10b8::103AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.p7s1ns.de, ns2.p7s1ns.net.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 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 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.p7s1ns.de 192.174.68.103NOERROR, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns1.p7s1ns.de 2001:67c:1bc::103NOERROR, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.p7s1ns.net 176.97.158.103NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.p7s1ns.net 2001:67c:10b8::103NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1

Checks

  • ✓ All respond #14
    All 4 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: ns1.p7s1ns.de: "RcodeZero DNS"; ns2.p7s1ns.net: "reg-wie1".
    #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 1783925977 · primary ns1.p7s1ns.de

Found

Primary (MNAME)
ns1.p7s1ns.de
Contact (RNAME)
domains.prosiebensat1.com
Serial
1783925977
Refresh / retry
14400 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.p7s1ns.de (192.174.68.103)1783925977
ns1.p7s1ns.de (2001:67c:1bc::103)1783925977
ns2.p7s1ns.net (176.97.158.103)1783925977
ns2.p7s1ns.net (2001:67c:10b8::103)1783925977

Checks

  • ✓ Serial 1783925977 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.p7s1ns.de is one of the listed nameservers.
  • ✓ Contact domains@prosiebensat1.com #25
    The SOA RNAME domains.prosiebensat1.com means domains@prosiebensat1.com.
  • ✓ Timestamp serial #26
    The serial 1783925977 is a Unix timestamp (2026-07-13 06:59 UTC).

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

21 records at the apex

Found

Read from
192.174.68.103:53
TypeValueTTL
SOAns1.p7s1ns.de. domains.prosiebensat1.com. 1783925977 14400 1800 1209600 360086400
NSns1.p7s1ns.de.3600
NSns2.p7s1ns.net.3600
A15.197.178.513600
MX0 p7s1-net.mail.protection.outlook.com.3600
TXT"MS=ms14431987"3600
TXT"_fg4114054caxem2t1yfj751wxy2ttc0"3600
TXT"f4h67v9lmv4w18cdm4q98288tp8kz23s"3600
TXT"QuoVadis=5c512695-a875-435f-b7d5-9daf5f03266d"3600
TXT"docusign=6bcb60af-54dc-4439-bfb4-d766437edeb5"3600
TXT"docusign=e38ff24f-1fd9-432a-8303-6ce609b7ef9b"3600
TXT"miro-verification=db42fb192240574a09d6536c73a60d9b622b446c"3600
TXT"201905151246555kxsdr7s6stwq8x2or2w5fici851xpeajcmfuvav7vc051h3rf"3600
TXT"extensis-domain-verification=0ac32a58-97ec-487e-88a3-62831b140178"3600
TXT"google-site-verification=M_j7uKqNDTejfkzGV3nFJPiv_zn9Kg7QEk2hsMdAeF8"3600
TXT"google-site-verification=SlS4wT0M0-VsA3HUxSnUkim13dM5_GIRkBY0UOd6Q-4"3600
TXT"google-site-verification=VhQXvpnnrCC7v7KuVkse1q0m4qSrMBfOmHSd_JJEKD8"3600
TXT"google-site-verification=o9QY4QYrdYDBVSySzew2zV_seFAvZBhSfFrM-3BLT4s"3600
TXT"F4CDBJB4xl9W+y8/H8/LjHhP2FFl+rkjgulHKy/spN4jRPnLIJ97rPUCan644qCS4hVJOCI1eyZUxJdSKfjFdA=="3600
TXT"YniF5ZeucY6RQz5NwtNddEyD9vutn61gIryPFSCPGWhERF7xgAvxE92kybQxQNnDWYCTJsmBIeeXFIsXPolcPA=="3600
TXT"v=spf1 include:spf.protection.outlook.com include:spf.p7s1.net include:amazonses.com ip4:51.195.2.104/29 -all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
  • ✓ 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