investagrams.com

Checked 22 October 2026, 09:21 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · eNom, LLC · expires 2029-08-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
eNom, LLC
Registered
2 August 2014
Last changed
9 September 2023
Expires
2 August 2029
Status
client transfer prohibited
Registry nameservers
burt.ns.cloudflare.com, linda.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 2029-08-02 #3
    The registration is valid until 2029-08-02 (1014 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, linda.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, linda.ns.cloudflare.com
NS in the zone
burt.ns.cloudflare.com, linda.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
burt.ns.cloudflare.com108.162.193.79 173.245.59.79 172.64.33.79 2606:4700:58::adf5:3b4f 2a06:98c1:50::ac40:214f 2803:f800:50::6ca2:c14fAS13335 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
linda.ns.cloudflare.com173.245.58.250 172.64.32.250 108.162.192.250 2606:4700:50::adf5:3afa 2803:f800:50::6ca2:c0fa 2a06:98c1:50::ac40:20faAS13335 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., US108.162.192.250 172.64.32.250 173.245.58.250 2606:4700:50::adf5:3afa 2803:f800:50::6ca2:c0fa 2a06:98c1:50::ac40:20fa

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: burt.ns.cloudflare.com, linda.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 173.245.59.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 172.64.33.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2606:4700:58::adf5:3b4fNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2a06:98c1:50::ac40:214fNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2803:f800:50::6ca2:c14fNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
linda.ns.cloudflare.com 173.245.58.250NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
linda.ns.cloudflare.com 172.64.32.250NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
linda.ns.cloudflare.com 108.162.192.250NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
linda.ns.cloudflare.com 2606:4700:50::adf5:3afaNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
linda.ns.cloudflare.com 2803:f800:50::6ca2:c0faNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
linda.ns.cloudflare.com 2a06:98c1:50::ac40:20faNOERROR, 16 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"; linda.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 2417719040 · primary burt.ns.cloudflare.com

Found

Primary (MNAME)
burt.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417719040
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)2417719040
burt.ns.cloudflare.com (173.245.59.79)2417719040
burt.ns.cloudflare.com (172.64.33.79)2417719040
burt.ns.cloudflare.com (2606:4700:58::adf5:3b4f)2417719040
burt.ns.cloudflare.com (2a06:98c1:50::ac40:214f)2417719040
burt.ns.cloudflare.com (2803:f800:50::6ca2:c14f)2417719040
linda.ns.cloudflare.com (173.245.58.250)2417719040
linda.ns.cloudflare.com (172.64.32.250)2417719040
linda.ns.cloudflare.com (108.162.192.250)2417719040
linda.ns.cloudflare.com (2606:4700:50::adf5:3afa)2417719040
linda.ns.cloudflare.com (2803:f800:50::6ca2:c0fa)2417719040
linda.ns.cloudflare.com (2a06:98c1:50::ac40:20fa)2417719040

Checks

  • ✓ Serial 2417719040 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 2417719040 is a Unix timestamp (2046-08-12 20:37 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

18 records at the apex

Found

Read from
108.162.193.79:53
TypeValueTTL
SOAburt.ns.cloudflare.com. dns.cloudflare.com. 2417719040 10000 2400 604800 18001800
NSburt.ns.cloudflare.com.86400
NSlinda.ns.cloudflare.com.86400
A104.26.8.93300
A172.67.75.146300
A104.26.9.93300
AAAA2606:4700:20::681a:95d300
AAAA2606:4700:20::ac43:4b92300
AAAA2606:4700:20::681a:85d300
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"brevo-code:dd0c29669540948cd19ae3bfcfad263a"300
TXT"google-site-verification=lu_tUEmjBgrzWC7o0s7lKidyyF-PQkaFIAkO7742hE0"300
TXT"investagramsv3.azurewebsites.net"300
TXT"v=spf1 mx include:zoho.com ip4:137.116.134.163 include:_spf.google.com include:_spf.mlsend.com -all"300

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.
  • 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