sanofi.com

Checked 22 October 2026, 10:34 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2034-10-12

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
13 October 1995
Last changed
14 January 2025
Expires
12 October 2034
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.sanofi-synthelabo.com, ns2.sanofi-synthelabo.com, ns3.sanofi-synthelabo.com, ns4.sanofi-synthelabo.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2034-10-12 #3
    The registration is valid until 2034-10-12 (2911 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

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

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
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., US205.251.198.127
ns2.sanofi-synthelabo.com205.251.196.144 2600:9000:5304:9000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.196.144
ns3.sanofi-synthelabo.com205.251.193.224 2600:9000:5301:e000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.224
ns4.sanofi-synthelabo.com205.251.194.58 2600:9000:5302:3a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.194.58

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.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1.sanofi-synthelabo.com (glue 205.251.198.127, zone 205.251.198.127, 2600:9000:5306:7f00::1); ns2.sanofi-synthelabo.com (glue 205.251.196.144, zone 205.251.196.144, 2600:9000:5304:9000::1); ns3.sanofi-synthelabo.com (glue 205.251.193.224, zone 205.251.193.224, 2600:9000:5301:e000::1); ns4.sanofi-synthelabo.com (glue 205.251.194.58, zone 205.251.194.58, 2600:9000:5302:3a00::1). Update the glue at your registrar.
    #8
  • ✓ 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, 10 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, 9 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 2016032100 · primary ns1.sanofi-synthelabo.com

Found

Primary (MNAME)
ns1.sanofi-synthelabo.com
Contact (RNAME)
gtly-domtech.sanofi.com
Serial
2016032100
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)2016032100
ns1.sanofi-synthelabo.com (2600:9000:5306:7f00::1)2016032100
ns2.sanofi-synthelabo.com (205.251.196.144)2016032100
ns2.sanofi-synthelabo.com (2600:9000:5304:9000::1)2016032100
ns3.sanofi-synthelabo.com (205.251.193.224)2016032100
ns3.sanofi-synthelabo.com (2600:9000:5301:e000::1)2016032100
ns4.sanofi-synthelabo.com (205.251.194.58)2016032100
ns4.sanofi-synthelabo.com (2600:9000:5302:3a00::1)2016032100

Checks

  • ✓ Serial 2016032100 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 2016032100 follows the YYYYMMDDnn convention (2016-03-21).

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

57 records at the apex

Found

Read from
205.251.198.127:53
TypeValueTTL
SOAns1.sanofi-synthelabo.com. gtly-domtech.sanofi.com. 2016032100 28800 14400 3600000 900900
NSns1.sanofi-synthelabo.com.900
NSns2.sanofi-synthelabo.com.900
NSns3.sanofi-synthelabo.com.900
NSns4.sanofi-synthelabo.com.900
A52.18.193.106900
A3.251.44.146900
MX5 de-smtp-inbound-1.mimecast.com.900
MX5 de-smtp-inbound-2.mimecast.com.900
TXT"015y5l8cwr1ktr25750rcmqmch0rw733"900
TXT"7v1zw7jkb8bsdpm7wq1vwydsklcr8xty"900
TXT"BHkTtzPH=9d8f7f7e683fa51eda16c8e7d2986d4e"900
TXT"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3/oGSyEyD6Bg86wVv0NlX/W57rg5WbO0wKKSfu5ayOgumXeRL1Cb85RT8NoReuD377CCtDIyCPfBecMLPEo8qSGf2u22Y94Dq5V5Hp3ACR8Ve1NgE6voyhZC8iNpV97eICHBc3BldfZT2lY0p/Rat19vubpI97qOYNjPGqur4a+hh7V7EJKQ1NjOUQx4wD73DVUZ1JO4MXFRtgXnD3w" "Cp0+rm/hkft7FbuTy3KfVqIa7xuC1bGPsKfZ7gfi6g/frApSjjF6FjhbmSQyR/grvAnLVaZSguXoG38KrfNq0BH84eOjVAEFfDmH3GWBnT16dOFGY67BYEVIsgXRmkQjPcwIDAQAB"900
TXT"MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxEtBoNk56eYDx1/G14OtDuP1P7LWhKcoXRdfw2Vmti5MJuvGDSZzuIzwrNOONRVoa9gJNPE+81yi8QG/nR2V8Yo4by9XXK3ozMFZxKmaZer1V47wxNlOVLO4bfgdY2bEdjNkKRgWL++14HPa8P4G9pqUDBrY9q0hPQ5pRY2LpCbP2z8QHL8nEvuLSDgon2TFdlHJaeENlHjCbsVcFzR" "MawBYmfPvERAZrWUOlyygybnEsvdXydoxuE5y+yTSFAlxpbpI/vkIK+0oHy9Aq3uRNlzXPtzXWbY1cxOX80sKBUwk17o9GoxFVRIhTyNavOuDGzj8Al9RBIHnYNPs6Er57wIDAQAB"900
TXT"MS=ms59110129"900
TXT"N3YNY9NKA8K9RT5NCPHP3U6R4WRKTSX6PN4EWR87NQK4NB3SER3YBRXL5MFNHG33"900
TXT"NB07BXwwj39ybq5aCF5PZfNwFXyq2oLh/rpK7ewwAhs="900
TXT"SFMC-9-ODOdFL7HsemKaXOL4heSJrvUKqH4j9ohFmFeLC"900
TXT"_ldelnraonu22jrkk21zdm2e972btbrj"900
TXT"_yst7z08c36oz25fk7sllqb87pt7mbsb"900
TXT"amazonses:8UKDkTD99x//sELPj6SmHSjLJcVjM8RH0MhH5bjod9w="900
TXT"anthropic-domain-verification-tw1mbh=X0USLetMsJObaGuAiEclaM4DO"900
TXT"apple-domain-verification=Y0VJfMMVpKBRjVRF"900
TXT"astro-domain-verification=cmv5fhtgn048d01i3sx98l5t6"900
TXT"atlassian-domain-verification=41WHRt8pLBQeloLxmM345GdKSqc7IH/i/60GgYaTbJyLEaJvIhzHYmxDQBRW8AfS"900
TXT"atlassian-domain-verification=5lZ81HepdZsv6mVuMfgPttecJqNtFfLc1wYxHvF9A7yZS2+tWPLj814Dr2xyOli8"900
TXT"atlassian-domain-verification=i7O/SO/Q3P8iXPRkp/iBhcRpkxwQ1QqWQOZRx01JRbz30YZttowD5wjRcjqDB5aA"900
TXT"brevo-code:75ecd9d2c0ad912254128732f8265d28"900
TXT"cisco-ci-domain-verification=1223454b436b900f3f05ecd959c1e36af8e34bd1cbaaf719ba5f919a9e03aef3"900
TXT"cisco-ci-domain-verification=2fc6f73e419d66eca2c4603ff2b76b725624775f6012a5171051f509747694c3"900
TXT"cursor-domain-verification-4tfc5k=Ts5Z4p1X3tkqIz3vB2Y9ULKiD"900
TXT"dtm-domain-verification=4szPUFdyjcYtiagUOF_302jgZdJAPDlxTSB0x7LLj-g"900
TXT"facebook-domain-verification=dtyujxwqq81e93xugw4jwm0ry5097c"900
TXT"facebook-domain-verification=tc4j4pzzuv0selmih7fch9pke17n71"900
TXT"figma-domain-verification=93d6cbbbeff4f577dd4c909b971cdf3f84e923c67d4fba718a02f99247b3aea8-1736779249"900
TXT"globalsign-domain-verification=mO6E0gOvPuScqCp_fWor9bFAwKcgUa-ukSEHn1nK1V"900
TXT"google-site-verification=n-51zLgFP2CJeW-lckyXi80hx0Gw453X1MWkDuETpFk"900
TXT"google-site-verification=yBhW7xBN3LTCBKmo7H6M0rNRxhfdV7XNrcrRTq-vij8"900
TXT"io7lbbfs16ukdlv3o5h4sid680"900
TXT"jamf-site-verification=UiAQmd1YMvEobyS8GxURhw"900
TXT"m0jCUq1B+Ei1DCLuzoD8sdcxXCnj6yWsWHaaKpV90ng="900
TXT"miro-verification=bb84b539f095145588a21d54bcc6c9f01e90dcdf"900
TXT"ms-domain-verification=6e77af2d-887d-4f49-80f9-e0646d869a5e"900
TXT"n/zazkTeBK/seFc3mZyq76EnGRxe3Vdo+VtW/zKLIag="900
TXT"n9eLl/tpArLrxfSuLMtuK4zdsXFS/WiVbsd8B85JJlA="900
TXT"ndh204m1f87j82hu48khmcj200"900
TXT"o6N7gwcJH7WPresl/agMLIABMtlqwp5UxzYW20v8ywdht+n95JgVF1Aimtv6Q4cjGfKjok0LyYLRIHkthDKrxA=="900
TXT"onetrust-domain-verification=929ad061e01441dc9bff0d25b54befcb"900
TXT"paloaltonetworks-site-verification=a675a21a7fe846bd27d5693bb1290467a8d2c445ad145430ebb1e8b4727dbd3c"900
TXT"segment-site-verification=6WicFo5iXYHlFNOaceK8IH8XFnuAssLi"900
TXT"sendinblue-code:5972ec5111b0a57a703b3342bf9f33ff"900
TXT"smartsheet-site-validation=RTAqznYXmWfp2aDHS7xhGpVavU9KejsG"900
TXT"snowflake-verification=b1cb6845-019f-1000-800c-0000000003f3"900
TXT"teamviewer-sso-verification=b83a8c3db17f4b0294df1cf7822f89ad"900
TXT"v=DKIM1; t=s; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz8ciPemZUPSDJePLfvQNYpD+IrXpSNEnQT5SP/WgyrI93+2Km1/eBxAc2RzfB0wAULpZPk/6o4x97R26MLWhWbj0pXM3VFBdMZp1Kf2DIK58lKGaAiWDF+BI6kuHHXm1+55iDq7aC8uBsWCKYcbu0hZtYfxzpJNAfRtM8NE1ctMHQh2Jtz/R4GIgtTRc" "hyAc9yeBiMGhB6bv0dig8vuZzplXzNfTda3AQHuE5hqhw/NJk99/tSkKv5G32+o/nJ6oJWKt+Y7caO91bR/v0mBLMkPemIEUjqLkyhwFc6as8HcB9nzrUUSaXxVMX3gHAKZAZQe7AEKGp5jA/5wStULfSQIDAQAB"900
TXT"v=spf1 include:spf-a.sanofi.com include:spf-c.sanofi.com include:spf.protection.outlook.com include:de._netblocks.mimecast.com include:us._netblocks.mimecast.com ~all"900
TXT"work-accounts-domain-verification=cz7du5m50lsPlkqQ34lvhEX196wzcw"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, MX 15m, NS 15m. The NS TTL at the parent is 2d 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