mailchimp.com

Checked 22 October 2026, 09:42 UTC · via 8.8.8.8
!Passed with warnings
25 passed 3 warnings 0 failed 3 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2029-06-29

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
29 June 2001
Last changed
21 June 2024
Expires
29 June 2029
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
a1-205.akam.net, a14-66.akam.net, a4-65.akam.net, a5-65.akam.net, a6-66.akam.net, a7-66.akam.net
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 2029-06-29 #3
    The registration is valid until 2029-06-29 (981 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update 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

info

a1-205.akam.net, a14-66.akam.net, a4-65.akam.net, a5-65.akam.net, a6-66.akam.net, a7-66.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-205.akam.net, a14-66.akam.net, a4-65.akam.net, a5-65.akam.net, a6-66.akam.net, a7-66.akam.net
NS in the zone
a1-205.akam.net, a14-66.akam.net, a4-65.akam.net, a5-65.akam.net, a6-66.akam.net, a7-66.akam.net
NameserverAddressesNetwork (AS)Glue
a1-205.akam.net193.108.91.205 2600:1401:2::cdAS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a14-66.akam.net184.26.161.66 2600:1480:1800::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-65.akam.net72.246.46.65 2600:1480:9000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-65.akam.net95.100.168.65 2600:1480:b000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a6-66.akam.net23.211.133.66 2600:1401:1::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-66.akam.net23.61.199.66 2600:1406:32::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-205.akam.net, a14-66.akam.net, a4-65.akam.net, a5-65.akam.net, a6-66.akam.net, a7-66.akam.net.
  • ✓ 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 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 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 .net
    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
a1-205.akam.net 193.108.91.205NOERROR, 3 ms, authoritativenoyes / yesrefused41824.10
a1-205.akam.net 2600:1401:2::cdNOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a14-66.akam.net 184.26.161.66NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a14-66.akam.net 2600:1480:1800::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a4-65.akam.net 72.246.46.65NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a4-65.akam.net 2600:1480:9000::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a5-65.akam.net 95.100.168.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a5-65.akam.net 2600:1480:b000::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a6-66.akam.net 23.211.133.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a6-66.akam.net 2600:1401:1::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a7-66.akam.net 23.61.199.66NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a7-66.akam.net 2600:1406:32::42NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6

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: a1-205.akam.net: "41824.10"; a1-205.akam.net: "41824.5"; a14-66.akam.net: "48878.26"; a14-66.akam.net: "48878.29"; a4-65.akam.net: "48878.33"; a4-65.akam.net: "48878.27"; a5-65.akam.net: "41824.8"; a5-65.akam.net: "41824.6"; a6-66.akam.net: "48878.26"; a6-66.akam.net: "48878.32"; a7-66.akam.net: "41824.4"; a7-66.akam.net: "41824.6". 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 2016033496 · primary a1-205.akam.net

Found

Primary (MNAME)
a1-205.akam.net
Contact (RNAME)
domains.mailchimp.com
Serial
2016033496
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
a1-205.akam.net (193.108.91.205)2016033496
a1-205.akam.net (2600:1401:2::cd)2016033496
a14-66.akam.net (184.26.161.66)2016033496
a14-66.akam.net (2600:1480:1800::42)2016033496
a4-65.akam.net (72.246.46.65)2016033496
a4-65.akam.net (2600:1480:9000::41)2016033496
a5-65.akam.net (95.100.168.65)2016033496
a5-65.akam.net (2600:1480:b000::41)2016033496
a6-66.akam.net (23.211.133.66)2016033496
a6-66.akam.net (2600:1401:1::42)2016033496
a7-66.akam.net (23.61.199.66)2016033496
a7-66.akam.net (2600:1406:32::42)2016033496

Checks

  • ✓ Serial 2016033496 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-205.akam.net is one of the listed nameservers.
  • ✓ Contact domains@mailchimp.com #25
    The SOA RNAME domains.mailchimp.com means domains@mailchimp.com.
  • ✓ Timestamp serial #26
    The serial 2016033496 is a Unix timestamp (2033-11-19 17:18 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

warn

48 records at the apex

Found

Read from
193.108.91.205:53
TypeValueTTL
SOAa1-205.akam.net. domains.mailchimp.com. 2016033496 10800 3600 1209600 600300
NSa1-205.akam.net.7200
NSa6-66.akam.net.7200
NSa14-66.akam.net.7200
NSa7-66.akam.net.7200
NSa5-65.akam.net.7200
NSa4-65.akam.net.7200
A23.222.80.10520
MX5 mx2.intuit.iphmx.com.60
MX5 mx1.intuit.iphmx.com.60
TXT"_4u0mlvjxxxpqyv676anx8wkajzdzk0q"1800
TXT"_5ztv7l82u6qsfemlfu89jyhrhyho2z1"1800
TXT"MS=5D41393E1B1E2A326C6154F96B8D4EEBDC58A667"1800
TXT"google-site-verification=FCp4CIH0-oOMadlYtNFvxRTI9_2zW1WDkXFR7pV8kPg"1800
TXT"google-site-verification=iBzo6FrDJ3rlsGoEUXL_YNHKVreLxzetIZRuCUlnBeQ"1800
TXT"o0m1nz3r7t"1800
TXT"_hzhrvm90xu668iuj6wb6s6swrxpa130"1800
TXT"apple-domain-verification=VyVmVW02Ds1n6FQa"1800
TXT"google-site-verification=WW0kxheERt2YHAEclRL_5DCFawde0CCdmJtXyNXS_7I"1800
TXT"v=spf1 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.0.0/16 ip4:129.145.74.12 include:_spf.google.com include:mailsenders.netsuite.com include:_spf2.intuit.com " "include:_spf.qualtrics.com ip4:199.33.145.1 ip4:199.33.145.32 ip4:35.176.132.251 ip4:52.60.115.116 ~all"1800
TXT"docusign=a0dc4d7a-5002-4653-bb4f-959c68aa9074"1800
TXT"google-site-verification=ruul5w2E3u_oxPm-3xBtwAPFtTus0sysqVmIxy5frlg"1800
TXT"mandrill_verify.5xzlEj2UVG87cZHpVJCi1A"1800
TXT"zscaler-verification-42108621-10312025-7GNw9T"1800
TXT"MS=ms64719398"1800
TXT"digicert-domain-verification=_6g0u9nlv0mrvwb42upf06tgvu9gfum0"1800
TXT"digicert-domain-verification-api=_l7n57xjtvdexvstchmg2p9g0647df5j"1800
TXT"google-site-verification=qSv3r3tfEN8dtGaL1jVStrokm_jKImsl4cvgUG_6q5g"1800
TXT"atlassian-domain-verification=rOuxrbpoM8X0dyjve2lLYnnHEXBtmxbGzk17YgboFB62K3dXo2gnekijahD5DdOg"1800
TXT"google-site-verification=gYGKtLPycLOsWo5xUlOOGWsvENDmTYIt1X9iE1PZEP8"1800
TXT"apple-domain-verification=rtX1pAADNqH2UyA1vjbkylBSL92ZkTBvvFt54v3z5ck"1800
TXT"onetrust-domain-verification=a014c8e6937e453f8448babef5311dfd"1800
TXT"smartsheet-site-validation=iJlsJdcpCMM9BUovg1yWWyqVYfZZWDdx"1800
TXT"zapier-domain-verification-challenge=7f0c4720-f8f2-4f40-b264-cb21fe731403"1800
TXT"google-site-verification=6dAIWpnctxIKj5r1bLhn2iGED8AGy8W_17S6scTDbbw"1800
TXT"facebook-domain-verification=hmwpoaxoffl9lyv7a1jag656uo66wb"1800
TXT"google-site-verification=HceFICpk7mLeoOmNAIxQyKx6NMEEjRlNgU_GC7UmaZI"1800
TXT"_72ru7fr8c0ncfmjg71hyedfisw40m4h"1800
TXT"google-site-verification=kjsRysndjNMMbqiWeLDEWuFKQifOKoBTpHJWZhFwr6E"1800
TXT"google-gws-recovery-domain-verification=48989807"1800
TXT"adobe-idp-site-verification=b462bb17fbdf88e847859454079da73265c27a30a38d2c83f4a6e21a085a6d72"1800
TXT"onetrust-domain-verification=c77e00667a61495a933ef5219a1f71db"1800
TXT"digicert-verification=zp2grw3qhjdfrzqpyybxtfbpzrk266g7"1800
TXT"onetrust-domain-verification=39a9942af0b642f1b6d2129f2aeaa1cc"1800
CAA0 issue "amazonaws.com"1800
CAA0 issue "letsencrypt.org"1800
CAA0 issue "pki.goog"1800
CAA0 issue "digicert.com"1800

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), MX (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 2h; resolvers may use either.
    #32
  • ✓ 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: amazonaws.com, letsencrypt.org, pki.goog, digicert.com.