zoho.com

Checked 22 October 2026, 11:44 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 2 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2031-01-16

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
16 January 2004
Last changed
23 October 2025
Expires
16 January 2031
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns1.zohocorp.com, ns11.zns-53.com, ns21.zns-53.net, ns31.zns-53.com, ns41.zns-53.net, pdns90.ultradns.biz, pdns90.ultradns.com, pdns90.ultradns.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 2031-01-16 #3
    The registration is valid until 2031-01-16 (1547 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

pass

ns1.zohocorp.com, ns11.zns-53.com, ns21.zns-53.net, ns31.zns-53.com, ns41.zns-53.net, pdns90.ultradns.biz, pdns90.ultradns.com, pdns90.ultradns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.zohocorp.com, ns11.zns-53.com, ns21.zns-53.net, ns31.zns-53.com, ns41.zns-53.net, pdns90.ultradns.biz, pdns90.ultradns.com, pdns90.ultradns.net
NS in the zone
ns1.zohocorp.com, ns11.zns-53.com, ns21.zns-53.net, ns31.zns-53.com, ns41.zns-53.net, pdns90.ultradns.biz, pdns90.ultradns.com, pdns90.ultradns.net
NameserverAddressesNetwork (AS)Glue
ns1.zohocorp.com156.154.67.90 2001:502:4612::7eAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.67.90 2001:502:4612::7e
ns11.zns-53.com136.143.172.88 2602:801:c00a::88AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US136.143.172.88 2602:801:c00a::88
ns21.zns-53.net136.143.173.99 2602:801:c00b::99AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US-
ns31.zns-53.com169.148.151.88 2602:801:c00c::88AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US169.148.151.88 2602:801:c00c::88
ns41.zns-53.net169.148.152.99 2602:801:c00c::99AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US AS397849 ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US-
pdns90.ultradns.biz156.154.66.90 2610:a1:1015::7eAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns90.ultradns.com156.154.64.90 2001:502:f3ff::7eAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.64.90 2001:502:f3ff::7e
pdns90.ultradns.net156.154.65.90 2610:a1:1014::7eAS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 8 nameservers #6
    Delegated to ns1.zohocorp.com, ns11.zns-53.com, ns21.zns-53.net, ns31.zns-53.com, ns41.zns-53.net, pdns90.ultradns.biz, pdns90.ultradns.com, pdns90.ultradns.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 8 IPv4 /24s and 7 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 8 addresses; AS397849 (ZOHO-STREAMING-CONTENT-NETWORK - ZOHO, US): 8 addresses.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .biz, .com, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.zohocorp.com 156.154.67.90NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.zohocorp.com 2001:502:4612::7eNOERROR, 33 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns11.zns-53.com 136.143.172.88NOERROR, 174 ms, authoritativenoyes / yesrefused-
ns11.zns-53.com 2602:801:c00a::88NOERROR, 119 ms, authoritativenoyes / yesrefused-
ns21.zns-53.net 136.143.173.99NOERROR, 180 ms, authoritativenoyes / yesrefused-
ns21.zns-53.net 2602:801:c00b::99NOERROR, 108 ms, authoritativenoyes / yesrefused-
ns31.zns-53.com 169.148.151.88NOERROR, 164 ms, authoritativenoyes / yesrefused-
ns31.zns-53.com 2602:801:c00c::88NOERROR, 111 ms, authoritativenoyes / yesrefused-
ns41.zns-53.net 169.148.152.99NOERROR, 179 ms, authoritativenoyes / yesrefused-
ns41.zns-53.net 2602:801:c00c::99NOERROR, 113 ms, authoritativenoyes / yesrefused-
pdns90.ultradns.biz 156.154.66.90NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns90.ultradns.biz 2610:a1:1015::7eNOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns90.ultradns.com 156.154.64.90NOERROR, 8 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns90.ultradns.com 2001:502:f3ff::7eNOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns90.ultradns.net 156.154.65.90NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns90.ultradns.net 2610:a1:1014::7eNOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 16 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.zohocorp.com: "UltraDNS Nameserver"; pdns90.ultradns.biz: "UltraDNS Nameserver"; pdns90.ultradns.com: "UltraDNS Nameserver"; pdns90.ultradns.net: "UltraDNS Nameserver".
    #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 2026102203 · primary ns1.zohocorp.com

Found

Primary (MNAME)
ns1.zohocorp.com
Contact (RNAME)
dnsadmin.vtitan.com
Serial
2026102203
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns1.zohocorp.com (156.154.67.90)2026102203
ns1.zohocorp.com (2001:502:4612::7e)2026102203
ns11.zns-53.com (136.143.172.88)2026102203
ns11.zns-53.com (2602:801:c00a::88)2026102203
ns21.zns-53.net (136.143.173.99)2026102203
ns21.zns-53.net (2602:801:c00b::99)2026102203
ns31.zns-53.com (169.148.151.88)2026102203
ns31.zns-53.com (2602:801:c00c::88)2026102203
ns41.zns-53.net (169.148.152.99)2026102203
ns41.zns-53.net (2602:801:c00c::99)2026102203
pdns90.ultradns.biz (156.154.66.90)2026102203
pdns90.ultradns.biz (2610:a1:1015::7e)2026102203
pdns90.ultradns.com (156.154.64.90)2026102203
pdns90.ultradns.com (2001:502:f3ff::7e)2026102203
pdns90.ultradns.net (156.154.65.90)2026102203
pdns90.ultradns.net (2610:a1:1014::7e)2026102203

Checks

  • ✓ Serial 2026102203 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.zohocorp.com is one of the listed nameservers.
  • ✓ Contact dnsadmin@vtitan.com #25
    The SOA RNAME dnsadmin.vtitan.com means dnsadmin@vtitan.com.
  • ✓ Date-based serial #26
    The serial 2026102203 follows the YYYYMMDDnn convention (2026-10-22).

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

43 records at the apex

Found

Read from
156.154.67.90:53
TypeValueTTL
SOAns1.zohocorp.com. dnsadmin.vtitan.com. 2026102203 7200 1800 1209600 3600300
NSns1.zohocorp.com.300
NSns11.zns-53.com.300
NSns21.zns-53.net.300
NSns31.zns-53.com.300
NSns41.zns-53.net.300
NSpdns90.ultradns.biz.300
NSpdns90.ultradns.com.300
NSpdns90.ultradns.net.300
A136.143.190.155300
MX10 smtpin.zoho.com.300
MX20 smtpin2.zoho.com.300
MX50 smtpin3.zoho.com.300
TXT"OSSRH-65508"300
TXT"5d7tzsjx9vpr6dwqfd9910mkffcr1893"300
TXT"_7w86ubhx27sgdoo84npral89s33t2u3"300
TXT"_9xdko5m9wh9tx7q8vz3vs0eo2y6l239"300
TXT"_cxpexq0rrrkb0kkkz3mc1v37kl4dsrp"300
TXT"_op091a6o68i6m2yma8y9axhq463xldm"300
TXT"_vb1jbmh83zb1vs3mq08a359g1dsf31h"300
TXT"qm36k1hcyk8f6rcncfpj7ngl5708cvhl"300
TXT"vgsr5l5dhfv2qr8g5ntl0w9jn9tnqr94"300
TXT" 2nb6vfc9zm9t9f941qhzh8c66z5x6lxp"300
TXT" _wcrm20bvcnsi6903akx0tvwk6knbzi8"300
TXT"openai-domain-verification=dv-cZm3nfyBwGQo4BZTvFnA8KfA"300
TXT"zoho-nimbus-mrePMidEyuuAwUlwP+s2IbAqvJIO0MkIbdfSbpojeiU="300
TXT"zoom-domain-verification=e4699571-2e14-4588-bfe0-471a645d4059"300
TXT"google-site-verification=1kia0zqFMMPaGxbNNJMN-zIfxFA8Djd6lYII_fbUjyM"300
TXT"google-site-verification=HJDhZb7eVwcBS1ZHYfa3zJKD7Ta5OlTtjGODvld90vs"300
TXT"google-site-verification=SEMszgPBLwGVsVcKzkWqXFsgw8B2IbSPm3X5lVMnoLY"300
TXT"google-site-verification=mQpZgdgWartH2aVfQgUPDRJ5AR2qqfCdGHtQqqNWBWw"300
TXT"google-site-verification=npo_5EGYt0elo-8NI3LdXc77FK2_lnKC5z4y_dHcxL0"300
TXT"tiktok-developers-site-verification=8r8evNiFT1R72lVTisYkXtd7MUXuDoy1"300
TXT"site24x7-signals-domain-verification=ccec90b648534446606c200af00e9295"300
TXT"site24x7-signals-domain-verification=df57290b9f0e5eb1fbcaca5849cc43b5"300
TXT"hubspot-developer-verification=ODRmYWExODEtMjBjMS00NTczLThhODgtZGFhZmFjZThkMjcz"300
TXT"v=spf1 include:spf.zoho.com include:zcsend.net include:spf.zohomail.com include:popspf.zohomail.com -all"300
TXT"postman-domain-verification=034222fcdc924fe91765763089a17ed482c4ae518ded4bb86a19ec03e744d91fce586e8c4da2b9a464a632414abde6331277fb126c22d70426869b6207a8bd1c"300
TXT"postman-domain-verification=9783fef3f967a95d9ae1b2e487850866e686c1b446fb385b037d7f8031b09aee0524196e7274f8ed956df0139866ff36f9d04db18d9d3baf897dcffd1ed34711"300
TXT"postman-domain-verification=f8a047d0c2ef40404a9fec778d40abf2f073d9e9172ac1eae49771a4f47d87b57bfbb335955921e13dd933941b96de48dbdbb118fa594ea90fc42299f39746d3"300
CAA0 issue "digicert.com"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "sectigo.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 5m, NS 5m. The NS TTL at the parent is 2d and in the zone 5m; 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, sectigo.com.