bayer.fr

Checked 22 October 2026, 01:53 UTC · via 8.8.8.8
!Passed with warnings
23 passed 1 warning 0 failed 7 info

Registration

info

.fr country-code · CSC CORPORATE DOMAINS INC. · expires 2028-09-08

Found

TLD
.fr (country-code)
ICANN policies apply
no
Registrar
CSC CORPORATE DOMAINS INC.
Registered
3 June 1998
Last changed
9 September 2026
Expires
8 September 2028
Status
active
Registry nameservers
pdns1.cscdns.net, pdns2.cscdns.net
RDAP server
https://rdap.nic.fr/

Checks

  • i
    .fr 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
    .fr is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2028-09-08 #3
    The registration is valid until 2028-09-08 (687 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

pdns1.cscdns.net, pdns2.cscdns.net

Found

Parent zone
fr
Delegation from
d.nic.fr (194.0.9.1)
NS at the parent
pdns1.cscdns.net, pdns2.cscdns.net
NS in the zone
pdns1.cscdns.net, pdns2.cscdns.net
NameserverAddressesNetwork (AS)Glue
pdns1.cscdns.net156.154.130.100 2610:a1:1022::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns2.cscdns.net156.154.131.100 2610:a1:1023::100AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: pdns1.cscdns.net, pdns2.cscdns.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 (AS12008 (VERCARA - Vercara, LLC, US): 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
  • i
    All nameserver names under .net
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
pdns1.cscdns.net 156.154.130.100NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns1.cscdns.net 2610:a1:1022::100NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.cscdns.net 156.154.131.100NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns2.cscdns.net 2610:a1:1023::100NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

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: pdns1.cscdns.net: "UltraDNS Nameserver"; pdns2.cscdns.net: "UltraDNS Nameserver".
    #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 2008014569 · primary pdns1.cscdns.net

Found

Primary (MNAME)
pdns1.cscdns.net
Contact (RNAME)
hostmaster.cscdns.net
Serial
2008014569
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
pdns1.cscdns.net (156.154.130.100)2008014569
pdns1.cscdns.net (2610:a1:1022::100)2008014569
pdns2.cscdns.net (156.154.131.100)2008014569
pdns2.cscdns.net (2610:a1:1023::100)2008014569

Checks

  • ✓ Serial 2008014569 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns1.cscdns.net is one of the listed nameservers.
  • ✓ Contact hostmaster@cscdns.net #25
    The SOA RNAME hostmaster.cscdns.net means hostmaster@cscdns.net.
  • ✓ Timestamp serial #26
    The serial 2008014569 is a Unix timestamp (2033-08-18 21:49 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

9 records at the apex

Found

Read from
156.154.130.100:53
TypeValueTTL
SOApdns1.cscdns.net. hostmaster.cscdns.net. 2008014569 28800 7200 604800 6007200
NSpdns1.cscdns.net.600
NSpdns2.cscdns.net.600
A75.2.28.136600
MX10 bayer-fr.mail.protection.outlook.com.3600
TXT"MS=ms39319654"600
TXT"XiP0nCiulDChhTKZffluQ9ipHoE="600
TXT"c6q8aiA3zy/SBXTOK3gG1AjNUa8="600
TXT"v=spf1 include:spf.bayer.com -all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 1h, NS 10m. The NS TTL at the parent is 1h and in the zone 10m; 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