mailerlite.com

Checked 22 October 2026, 09:42 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · NameCheap, Inc. · expires 2027-04-09

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
NameCheap, Inc.
Registered
9 April 2010
Last changed
1 December 2025
Expires
9 April 2027
Status
client transfer prohibited
Registry nameservers
andy.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 2027-04-09 #3
    The registration is valid until 2027-04-09 (169 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

andy.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
andy.ns.cloudflare.com, lucy.ns.cloudflare.com
NS in the zone
andy.ns.cloudflare.com, lucy.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
andy.ns.cloudflare.com172.64.33.101 108.162.193.101 173.245.59.101 2606:4700:58::adf5:3b65 2a06:98c1:50::ac40:2165 2803:f800:50::6ca2:c165AS13335 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., US108.162.193.101 172.64.33.101 173.245.59.101 2606:4700:58::adf5:3b65 2803:f800:50::6ca2:c165 2a06:98c1:50::ac40:2165
lucy.ns.cloudflare.com108.162.192.133 172.64.32.133 173.245.58.133 2a06:98c1:50::ac40:2085 2606:4700:50::adf5:3a85 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: andy.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
andy.ns.cloudflare.com 172.64.33.101NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
andy.ns.cloudflare.com 108.162.193.101NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
andy.ns.cloudflare.com 173.245.59.101NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
andy.ns.cloudflare.com 2606:4700:58::adf5:3b65NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
andy.ns.cloudflare.com 2a06:98c1:50::ac40:2165NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
andy.ns.cloudflare.com 2803:f800:50::6ca2:c165NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 108.162.192.133NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 172.64.32.133NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 173.245.58.133NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 2a06:98c1:50::ac40:2085NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 2606:4700:50::adf5:3a85NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lucy.ns.cloudflare.com 2803:f800:50::6ca2:c085NOERROR, 15 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: andy.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 2418038495 · primary andy.ns.cloudflare.com

Found

Primary (MNAME)
andy.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418038495
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
andy.ns.cloudflare.com (172.64.33.101)2418038495
andy.ns.cloudflare.com (108.162.193.101)2418038495
andy.ns.cloudflare.com (173.245.59.101)2418038495
andy.ns.cloudflare.com (2606:4700:58::adf5:3b65)2418038495
andy.ns.cloudflare.com (2a06:98c1:50::ac40:2165)2418038495
andy.ns.cloudflare.com (2803:f800:50::6ca2:c165)2418038495
lucy.ns.cloudflare.com (108.162.192.133)2418038495
lucy.ns.cloudflare.com (172.64.32.133)2418038495
lucy.ns.cloudflare.com (173.245.58.133)2418038495
lucy.ns.cloudflare.com (2a06:98c1:50::ac40:2085)2418038495
lucy.ns.cloudflare.com (2606:4700:50::adf5:3a85)2418038495
lucy.ns.cloudflare.com (2803:f800:50::6ca2:c085)2418038495

Checks

  • ✓ Serial 2418038495 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 andy.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 2418038495 is a Unix timestamp (2046-08-16 13:21 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

31 records at the apex

Found

Read from
172.64.33.101:53
TypeValueTTL
SOAandy.ns.cloudflare.com. dns.cloudflare.com. 2418038495 10000 2400 604800 18001800
NSandy.ns.cloudflare.com.86400
NSlucy.ns.cloudflare.com.86400
A104.18.37.66300
A172.64.150.190300
AAAA2a06:98c1:310d::6812:2542300
AAAA2a06:98c1:3109::ac40:96be300
MX0 aspmx.l.google.com.300
MX10 aspmx2.googlemail.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"MS=ms92209707"300
TXT"OSSRH-97692"300
TXT"ZOOM_verify_gLP675fUC6FrmRo4cyzLIv"300
TXT"anthropic-domain-verification-3whwhd=6uDvg0mUvFe2G8lrSiCuA21Nw"300
TXT"cursor-domain-verification-c7bmsf=s5d8ynWwu0GrqMhHqitZe1v59"300
TXT"facebook-domain-verification=91xfn3fuc7gwr6b2jxu688ehuwslsb"300
TXT"google-site-verification=-RBF49wZVZ73T52vp9orgDZ9U8hrB6mwhiM07c1vNU4"300
TXT"google-site-verification=Dyotp56Iw3I_K_JkhM7gNDZUdsWaoHwZxT55GfPkvl0"300
TXT"google-site-verification=pY4SkYo-9hGAdi3pkKlecpELf5prOTcm5wXgIAFzG3k"300
TXT"google-site-verification=v0Dnbm5MfM5ej5Rh21tdmlsfvISnKxGhQvFQZ75hX6Q"300
TXT"google-site-verification=zDRNln21O3n04sRIXRdsb8tHWVsJOgp4gAUJz2CRc3U"300
TXT"linear-domain-verification=mfmax7kvzjsk"300
TXT"mailerlite-domain-verification=2d53408c50bf6607850df86c0756bdd24290817f"300
TXT"mailerlite-domain-verification=851f9c478f907634c8a2c79839b8560f02c3a86a"300
TXT"mailerlite-domain-verification=a57db10bc62a7fa104fc6677342a4e661ded355d"300
TXT"slack-domain-verification=R5ZgrDZSMG2ORazzlnDoEKQ1odrOfcL31RpFFzPV"300
TXT"spacelift-domain-verification=trkhtiweiugiroege4378654"300
TXT"tipalti-domain-verification=41e8def4-4403-f111-838e-02501973a9c1"300
TXT"v=spf1 include:_spf.mailerlite.io include:_spf.mailersend.net include:_spf.google.com include:_spf.mlsend.com ip4:46.101.232.166 ip4:185.79.247.75 ip4:185.225.161.0/24 -all"300
TXT"yandex-verification: 11704c6a0d26be68"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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