instapage.com

Checked 22 October 2026, 09:20 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · NameCheap, Inc. · expires 2028-09-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
NameCheap, Inc.
Registered
5 September 2001
Last changed
31 July 2024
Expires
5 September 2028
Status
client transfer prohibited
Registry nameservers
burt.ns.cloudflare.com, lucy.ns.cloudflare.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 2028-09-05 #3
    The registration is valid until 2028-09-05 (683 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

burt.ns.cloudflare.com, lucy.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
burt.ns.cloudflare.com, lucy.ns.cloudflare.com
NS in the zone
burt.ns.cloudflare.com, lucy.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
burt.ns.cloudflare.com108.162.193.79 172.64.33.79 173.245.59.79 2803:f800:50::6ca2:c14f 2a06:98c1:50::ac40:214f 2606:4700:58::adf5:3b4fAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.79 172.64.33.79 173.245.59.79 2606:4700:58::adf5:3b4f 2803:f800:50::6ca2:c14f 2a06:98c1:50::ac40:214f
lucy.ns.cloudflare.com173.245.58.133 172.64.32.133 108.162.192.133 2606:4700:50::adf5:3a85 2a06:98c1:50::ac40:2085 2803:f800:50::6ca2:c085AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.133 172.64.32.133 173.245.58.133 2606:4700:50::adf5:3a85 2803:f800:50::6ca2:c085 2a06:98c1:50::ac40:2085

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: burt.ns.cloudflare.com, lucy.ns.cloudflare.com.
    #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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 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

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
burt.ns.cloudflare.com 108.162.193.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 172.64.33.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 173.245.59.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2803:f800:50::6ca2:c14fNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2a06:98c1:50::ac40:214fNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2606:4700:58::adf5:3b4fNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 173.245.58.133NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 172.64.32.133NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 108.162.192.133NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 2606:4700:50::adf5:3a85NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 2a06:98c1:50::ac40:2085NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 2803:f800:50::6ca2:c085NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: burt.ns.cloudflare.com: "2026.10.2"; lucy.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #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 2418129904 · primary burt.ns.cloudflare.com

Found

Primary (MNAME)
burt.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418129904
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
burt.ns.cloudflare.com (108.162.193.79)2418129904
burt.ns.cloudflare.com (172.64.33.79)2418129904
burt.ns.cloudflare.com (173.245.59.79)2418129904
burt.ns.cloudflare.com (2803:f800:50::6ca2:c14f)2418129904
burt.ns.cloudflare.com (2a06:98c1:50::ac40:214f)2418129904
burt.ns.cloudflare.com (2606:4700:58::adf5:3b4f)2418129904
lucy.ns.cloudflare.com (173.245.58.133)2418129904
lucy.ns.cloudflare.com (172.64.32.133)2418129904
lucy.ns.cloudflare.com (108.162.192.133)2418129904
lucy.ns.cloudflare.com (2606:4700:50::adf5:3a85)2418129904
lucy.ns.cloudflare.com (2a06:98c1:50::ac40:2085)2418129904
lucy.ns.cloudflare.com (2803:f800:50::6ca2:c085)2418129904

Checks

  • ✓ Serial 2418129904 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver burt.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2418129904 is a Unix timestamp (2046-08-17 14:45 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

pass

37 records at the apex

Found

Read from
108.162.193.79:53
TypeValueTTL
SOAburt.ns.cloudflare.com. dns.cloudflare.com. 2418129904 10000 2400 604800 18001800
NSburt.ns.cloudflare.com.86400
NSlucy.ns.cloudflare.com.86400
A172.64.150.251300
A104.18.37.5300
AAAA2a06:98c1:310a::ac40:96fb300
AAAA2606:4700:4407::6812:2505300
MX1 aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX5 alt1.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
TXT"1password-site-verification=JNVOXM6FS5HTHH3BXIT745QU7E"300
TXT"detectify-verification=ae33e5c523ebec0876a9e489b9a4f750"300
TXT"google-site-verification=B3dyEp0uFqo_M9fRy7Ftrub_tK8a4uH3K0T1RPGJCxo"300
TXT"google-site-verification=Nm8fc9Z59f6mGIbRo-ANlKpaHzHBGAH-BaMY9LhUnAY"300
TXT"google-site-verification=Zv9O0Pq0x5RteOzwusj-6zbc3WwDGlVkoAuWvF_IY6o"300
TXT"google-site-verification=eFhzyq-CQQ1ZNG2-KjEfjwQDBGNRs-CVOk56dLyNpEk"300
TXT"google-site-verification=kZc5MHwrwi7bz8gVDfWbAsdnCbK5kRP6zVjrbLOFumo"300
TXT"google-site-verification=lcH7Ry0eqXDwWdHSLeU-IGoQO4sKkJNQ8tN1f2JLQYM"300
TXT"google-site-verification=np2emZEu4HSteGg0s3NMLJxkBb_jjqIi_jINYF_-e1M"300
TXT"miro-verification=a55a2157c924a21570e702ea2a71ea5c117badf7"300
TXT"ps-cd-verification=3022a871-1413-4d14-a916-b0dd93c32dd6"300
TXT"v=spf1 include:_spf.aireml.com include:_spf.google.com include:mail.zendesk.com include:7533492.spf02.hubspotemail.net ip4:69.72.45.245 ip4:69.72.45.76 ip4:198.244.59.155 -all"300
CAA0 iodef "mailto:sysadmins@instapage.com"120
CAA0 issue "amazon.com"120
CAA0 issue "comodoca.com"120
CAA0 issue "digicert.com; cansignhttpexchanges=yes"120
CAA0 issue "letsencrypt.org"120
CAA0 issue "pki.goog; cansignhttpexchanges=yes"120
CAA0 issue "ssl.com"120
CAA0 issuewild "amazon.com"120
CAA0 issuewild "comodoca.com"120
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"120
CAA0 issuewild "letsencrypt.org"120
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"120
CAA0 issuewild "ssl.com"120

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 1h, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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: amazon.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.