signify.com

Checked 22 October 2026, 10:42 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 3 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2026-12-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
10 October 1996
Last changed
26 December 2025
Expires
30 December 2026
Status
client transfer prohibited
Registry nameservers
ns1.ext.lighting.com, ns2.ext.lighting.com, ns3.ext.lighting.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 2026-12-30 #3
    The registration is valid until 2026-12-30 (68 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1.ext.lighting.com, ns2.ext.lighting.com, ns3.ext.lighting.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.ext.lighting.com, ns2.ext.lighting.com, ns3.ext.lighting.com
NS in the zone
ns1.ext.lighting.com, ns2.ext.lighting.com, ns3.ext.lighting.com
NameserverAddressesNetwork (AS)Glue
ns1.ext.lighting.com57.67.40.21 2a01:ce89:8001:0:57:67:40:21AS51964 ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US AS51964 ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US2a01:ce89:8001:0:57:67:40:21 57.67.40.21
ns2.ext.lighting.com57.77.21.77 2a01:ce95:4001:100:57:77:21:77AS51964 ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US AS51964 ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US2a01:ce95:4001:100:57:77:21:77 57.77.21.77
ns3.ext.lighting.com57.73.36.69 2a01:ce9d:1:0:57:73:36:69AS51964 ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US AS51964 ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US2a01:ce9d:1:0:57:73:36:69 57.73.36.69

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.ext.lighting.com, ns2.ext.lighting.com, ns3.ext.lighting.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 3 IPv4 /24s and 3 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS51964 (ORANGE-BUSINESS-SERVICES-IPSN-ASN - ORANGE BUSINESS SERVICES U.S. Inc., US): 6 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

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.ext.lighting.com 57.67.40.21NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns1.ext.lighting.com 2a01:ce89:8001:0:57:67:40:21NOERROR, 15 ms, authoritativenoyes / yesrefused-
ns2.ext.lighting.com 57.77.21.77NOERROR, 95 ms, authoritativenoyes / yesrefused-
ns2.ext.lighting.com 2a01:ce95:4001:100:57:77:21:77NOERROR, 93 ms, authoritativenoyes / yesrefused-
ns3.ext.lighting.com 57.73.36.69NOERROR, 163 ms, authoritativenoyes / yesrefused-
ns3.ext.lighting.com 2a01:ce9d:1:0:57:73:36:69NOERROR, 163 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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 2018042272 · primary ns1.ext.lighting.com

Found

Primary (MNAME)
ns1.ext.lighting.com
Contact (RNAME)
ddi-authority.signify.com
Serial
2018042272
Refresh / retry
1200 s / 300 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.ext.lighting.com (57.67.40.21)2018042272
ns1.ext.lighting.com (2a01:ce89:8001:0:57:67:40:21)2018042272
ns2.ext.lighting.com (57.77.21.77)2018042272
ns2.ext.lighting.com (2a01:ce95:4001:100:57:77:21:77)2018042272
ns3.ext.lighting.com (57.73.36.69)2018042272
ns3.ext.lighting.com (2a01:ce9d:1:0:57:73:36:69)2018042272

Checks

  • ✓ Serial 2018042272 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 20m, retry 5m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.ext.lighting.com is one of the listed nameservers.
  • ✓ Contact ddi-authority@signify.com #25
    The SOA RNAME ddi-authority.signify.com means ddi-authority@signify.com.
  • ✓ Date-based serial #26
    The serial 2018042272 follows the YYYYMMDDnn convention (2018-04-22).

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

pass

23 records at the apex

Found

Read from
57.67.40.21:53
TypeValueTTL
SOAns1.ext.lighting.com. ddi-authority.signify.com. 2018042272 1200 300 1209600 36003600
NSns2.ext.lighting.com.3600
NSns3.ext.lighting.com.3600
NSns1.ext.lighting.com.3600
A54.74.135.134300
MX5 signify-com.mail.protection.outlook.com.3600
TXT"MS=ms30313338"3600
TXT"openai-domain-verification=dv-H77EOSIkHRdS2GJfhmWi5aSg"3600
TXT"v=spf1 include:spf.protection.outlook.com include:spf.signify.com include:_xodarap.signify.com a:smtp.lamp.signify.com -all"3600
TXT"atlassian-domain-verification=M7k4ufvuVxQpaeavxlqx9EslH1daVaPwnUmZNrjO5zYyfH5NGlAGdYgW6WREHyBa"3600
TXT"_elastic_domain_challenge=b085ed7d023e37b11146f3b34055593cddde99d095101804ff61b6da9fb54ee7"3600
TXT"apple-domain-verification=6cncPrkwmVId039R"3600
TXT"atlassian-domain-verification=aRNsgEKA1ZLpyPUvO1uSMTWlmAY4HCyxgTeaEyTCDUeWXVZYkYmCY3WSgDUOs0Wv"3600
TXT"google-gws-recovery-domain-verification=39006403"3600
TXT"facebook-domain-verification=4ujphv87is8x1wb4iiu0wf6e2qpkax"3600
TXT"0ed1fe018a3ded682605bf454490bac2a786543fd1"3600
TXT"google-site-verification=rsYPLmRt9hJEBp09-f9CcYNXtk9Zcq49RUXHYhsls7o"3600
CAA0 iodef "mailto:caafnc@signify.com"3600
CAA0 issue "digicert.com"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "amazon.com"3600
CAA0 issue "buypass.com"3600
CAA0 issue "sectigo.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, letsencrypt.org, amazon.com, buypass.com, sectigo.com.