sanofi.de

Checked 22 October 2026, 00:01 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 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

ns1.sanofi-synthelabo.com, ns2.sanofi-synthelabo.com, ns3.sanofi-synthelabo.com, ns4.sanofi-synthelabo.com

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns1.sanofi-synthelabo.com, ns2.sanofi-synthelabo.com, ns3.sanofi-synthelabo.com, ns4.sanofi-synthelabo.com
NS in the zone
ns1.sanofi-synthelabo.com, ns2.sanofi-synthelabo.com, ns3.sanofi-synthelabo.com, ns4.sanofi-synthelabo.com
NameserverAddressesNetwork (AS)Glue
ns1.sanofi-synthelabo.com205.251.198.127 2600:9000:5306:7f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns2.sanofi-synthelabo.com205.251.196.144 2600:9000:5304:9000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns3.sanofi-synthelabo.com205.251.193.224 2600:9000:5301:e000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns4.sanofi-synthelabo.com205.251.194.58 2600:9000:5302:3a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.sanofi-synthelabo.com, ns2.sanofi-synthelabo.com, ns3.sanofi-synthelabo.com, ns4.sanofi-synthelabo.com.
  • ✓ 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
  • i
    All nameserver names under .com
    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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.sanofi-synthelabo.com 205.251.198.127NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns1.sanofi-synthelabo.com 2600:9000:5306:7f00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2.sanofi-synthelabo.com 205.251.196.144NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns2.sanofi-synthelabo.com 2600:9000:5304:9000::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns3.sanofi-synthelabo.com 205.251.193.224NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns3.sanofi-synthelabo.com 2600:9000:5301:e000::1NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns4.sanofi-synthelabo.com 205.251.194.58NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4.sanofi-synthelabo.com 2600:9000:5302:3a00::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 2016031006 · primary ns1.sanofi-synthelabo.com

Found

Primary (MNAME)
ns1.sanofi-synthelabo.com
Contact (RNAME)
gtly-domtech.sanofi.com
Serial
2016031006
Refresh / retry
28800 s / 14400 s
Expire
3600000 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.sanofi-synthelabo.com (205.251.198.127)2016031006
ns1.sanofi-synthelabo.com (2600:9000:5306:7f00::1)2016031006
ns2.sanofi-synthelabo.com (205.251.196.144)2016031006
ns2.sanofi-synthelabo.com (2600:9000:5304:9000::1)2016031006
ns3.sanofi-synthelabo.com (205.251.193.224)2016031006
ns3.sanofi-synthelabo.com (2600:9000:5301:e000::1)2016031006
ns4.sanofi-synthelabo.com (205.251.194.58)2016031006
ns4.sanofi-synthelabo.com (2600:9000:5302:3a00::1)2016031006

Checks

  • ✓ Serial 2016031006 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 4h, expire 1000h, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.sanofi-synthelabo.com is one of the listed nameservers.
  • ✓ Contact gtly-domtech@sanofi.com #25
    The SOA RNAME gtly-domtech.sanofi.com means gtly-domtech@sanofi.com.
  • ✓ Date-based serial #26
    The serial 2016031006 follows the YYYYMMDDnn convention (2016-03-10).

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

15 records at the apex

Found

Read from
205.251.198.127:53
TypeValueTTL
SOAns1.sanofi-synthelabo.com. gtly-domtech.sanofi.com. 2016031006 28800 14400 3600000 900900
NSns1.sanofi-synthelabo.com.900
NSns2.sanofi-synthelabo.com.900
NSns3.sanofi-synthelabo.com.900
NSns4.sanofi-synthelabo.com.900
A54.247.151.159900
MX10 mail.ipcare.de.900
TXT"1lbsb793rr2g0yrt9w07s7x0mx1bk4mc"900
TXT"4ukak6f62srk9jr674hgu9sctc"900
TXT"_globalsign-domain-verification=6HUU8q9QF_hIwkoB_oRNVpCpG8tsVLWrSQxH8AykGj"900
TXT"_globalsign-domain-verification=DMm9X2y0BvzQen21kUwhYkPZ6q7m0Qdk3h_pBezkT5"900
TXT"_globalsign-domain-verification=y0HBr4-zBJ3x52Jt_LSW3k_TfkObTZU33ILL-fSDJ-"900
TXT"google-site-verification=YAIFr0_qlmPuogemlL0mu_D-oql3jzOENs_5fUilD0g"900
TXT"google-site-verification=bYxcb7KSR5_IccphvadsXQLHLE3N_p3TwXWjjXqrDzA"900
TXT"krz4dxdzp6t5sb4mdd746lzb4s0y1ksd"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, MX 15m, NS 15m. The NS TTL at the parent is 1d and in the zone 15m; 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