HOW.IS
?

How is zendesk.com?

Looks fine risk 0/100

Registered 21 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 94 ms.

Why

02050100
finecarefulhigh risk
  • ·Nothing in the checks added risk.

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

How zendesk.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
94 ms · ends at www.zendesk.com
HTTPS
88 d
left on a Let's Encrypt certificate
Age
21 years
registered 2005-05-16
Blocklists
0
listings across 4 lists; 1 did not answer

Everything we looked at

DNS records4 record types
A216.198.54.2
216.198.53.2
MX0 us-smtp-inbound-1.mimecast.com
120 alt1.aspmx.l.google.com
0 us-smtp-inbound-2.mimecast.com
130 aspmx2.googlemail.com
110 aspmx.l.google.com
120 alt2.aspmx.l.google.com
NSns-1213.awsdns-23.org
ns-1858.awsdns-40.co.uk
ns-444.awsdns-55.com
ns-754.awsdns-30.net
TXTbox-domain-verification=a9056151b8e911fcdba552e791c9b4d8b8cc2f16d1bf5e9eced4abfcf3d32a30
thousandeyes:p6xh4ric6juof7rvskyh89vk8wvoruq7
v=spf1 ip4:103.151.192.0/23 ip4:104.43.243.237 ip4:149.97.173.180 ip4:163.116.128.0/17 ip4:170.10.128.0/24 ip4:170.10.129.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ip4:170.10.133.0/24 ip4:18.194.95.56 ip4:18.198.96.88 include:_spf1.zendesk.com ~all
uber-domain-verification=9901fd2f-d629-4f69-9390-17d58123fd00
segment-site-verification=GEXWlzlTT3BdxCVHHD6RoG5BBa6eRlcg
cursor-domain-verification-w67ssa=qctFFin6s0w3gtIS0YHW62IRx
openai-domain-verification=dv-cKgK7AWQErYbWivKlTNsL7qJ
DirectFedAuthUrl=https://zendesk.okta.com/app/zendesk_aiagentsazurezig_1/exk12ddadohvIJh7H2p8/sso/saml
hubspot-developer-verification=NmFlNmZmNWEtYWFkMS00NjFhLWIzNDEtMGE1ZTMxZDNkY2Y2
figma-domain-verification=d38ad4a1c1d6029e954e8d5c827d71106fb9844707ae35040523094f7bf4ce19-1740563203
atlassian-sending-domain-verification=740db120-4e15-4d5d-a7b0-66da110fa222
docker-verification=c5555047-3106-4749-98b2-1ae5745ba193
0ed1fe018a2374893f27154f25a6f54784f96b4b3b
atlassian-domain-verification=VKatnNN6Z5k9QFIABnW7CaZM1H0z5bp40v0DPNj7ba9zcn8JmG3POJsGOopCJ62O
qxxIl-wTDURBUBT4magGxQ
adobe-idp-site-verification=f87b90e3b016c68095df9b01c1339e70eaeb158b9517711d3c483357c52e2e9d
MS=ms87052054
ENJUTYRYQ
adobe-idp-site-verification=fbc17c835736a1814a7f09390192ce1da750205f984fa2e7582277ae8ceb1cb2
hj-ownership=uF7x7UmKwsPqPAfBVE6Tg
mongodb-site-verification=yDpxj8ExSlalPAMCJ8OgGqccAE3RKtjy
google-site-verification=LYyGUy8j5JeOt_Faduw1TMPTAR4fEzxfXDoT5B79giw
elevenlabs=oJCDeDsCsFVX_0uhh-t_yxJNbDETvr6cnP-UzNYvsr0
asv=63067a6ba7ee681dbe3e26dce01a13a5
apple-domain-verification=3pfH4AKY0NA72nHl
jamf-site-verification=03ryvTnFRg7t7K1fdvusNQ
mongodb-site-verification=e30FUzWMBmdMTeKqSkHvbokTve6pZOvw
google-site-verification=0B1l6Hmp14vgBWc3Yi9Lkdn98KxqEfm3_IcgKsBrUoc
92cfb88d-b895-4f46-934b-4ecd107e59a1
ca3-f35d69855c2041b4b2d4e861cb9fdd6f
atlassian-domain-verification=1EBT0aNzHvpjA0mUqdCF+qU/gsS8qxjjo50wYVc4nlCooKAJZUmVI2MnseANx2dd
mailru-verification: c287c4d52bb5fd3c
MS=ms91445911
count-okta-7SkGZInGQ7j0z4Cy4efxK
miro-verification=3673a7d2bed1d9d95363960b5842c237312cf42a
canva-site-verification=U1b9IGcuRrxhapP7GzJMAw
onetrust-domain-verification=8cfd00023e5b4b53836b5be310a416cd
942552362-2482447
google-site-verification=egnMXsUGOEcJHf0AEe6sA2ui1hxV56dVP5ekk029C8M
neat-pulse-domain-verification-VvrqZ7N=34d3bfcf-c556-4b05-a643-2019e0b08983
hubspot-developer-verification=YmRjZTlhZTItZmRhNy00ZjZhLWFhZTYtMDVlNzIwMmM2ZDgx
jTHbayHetmTY@@lm5PYDcPqV*F$W3Z&4AM$6u3acBLo$%xKnt!Kwr^@TP^jB43*pO^F6O8S8RizT8D03gHs#MWhF45fW3Tk%$mI
bettercomp-verify=eeb8764cb09d9e7ef96ba262012aac38cb571dbbb4fc996b5e3403a665bfe878
docusign=76412763-2e7d-4385-a9cf-227e938144d6
smartsheet-site-validation=uO9zE6IM1MDanLjT5EieLufj1cgQCau-
google-site-verification=Xcw5HeCMN0tRTA_wtmvXyrNJhnkOfxqydAJziyZYbs8
RegistrationMarkMonitor Inc.
registrarMarkMonitor Inc.
registered2005-05-16
expires2027-05-16
last changed2024-04-15
ownerREDACTED FOR PRIVACY
nameserversns-1213.awsdns-23.org
ns-1858.awsdns-40.co.uk
ns-444.awsdns-55.com
ns-754.awsdns-30.net
statusclient delete prohibited
client transfer prohibited
client update prohibited
server delete prohibited
server transfer prohibited
server update prohibited
registered 2005-05-16expires 2027-05-16
HTTPS certificate88 days left
validyes
issuerLet's Encrypt
covers*.zendesk.com, zendesk.com
protocolTLSv1.3
issued 2026-10-24expires 2027-01-22
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → zendesk.com
Email authenticationexcellent
SPFpass v=spf1 ip4:103.151.192.0/23 ip4:104.43.243.237 ip4:149.97.173.180 ip4:163.116.128.0/17 ip4:170.10.128.0/24 ip4:170.10.129.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ip4:170.10.133.0/24 ip4:18.194.95.56 ip4:18.198.96.88 include:_spf1.zendesk.com ~all
DMARCpass policy reject
DKIMfound: k1, s1, s2

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 165/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
20/25missing: IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 8 lookups
SURBL MultidomainURIBL MultidomainSpamCop216.198.54.2Barracuda216.198.54.2UCEPROTECT Level 1216.198.54.2SpamCop216.198.53.2Barracuda216.198.53.2UCEPROTECT Level 1216.198.53.2

Green: clean. Red: listed. Grey: the list did not answer.

Ask it yourself

Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.

curl "https://how.is/v1/domain/trust?domain=zendesk.com" \ -H "Authorization: Bearer $HOWIS_KEY" # or pay per call in USDC (x402), no key: the 402 tells your agent the price curl -i "https://how.is/v1/domain/profile?domain=zendesk.com"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on zendesk.com. Reference: /llms.txt.

Watch zendesk.com. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.

Watch — $1 / 30 days