HOW.IS
?

How is klaviyo.com?

Looks fine risk 0/100

Registered 15 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 120 ms.

Why

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

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

How klaviyo.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
120 ms · ends at www.klaviyo.com
HTTPS
111 d
left on a Amazon certificate
Age
15 years
registered 2012-03-29
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records4 record types
A18.165.83.97
18.165.83.109
18.165.83.92
18.165.83.46
MX10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com
30 aspmx4.googlemail.com
30 aspmx5.googlemail.com
NSns-1372.awsdns-43.org
ns-1555.awsdns-02.co.uk
ns-224.awsdns-28.com
ns-963.awsdns-56.net
TXT<whimsical=50616009f2ad1328a4936c7dea52b17d5ccda430>
EU5VQe53KTDQgPby023o4w
MS=ms41847412
ZOOM_verify_wGMfgQPjSL-zAzDdm2XU8g
_cfb1oposxku185vj4xbq9l4w9quli6g
actively-ai-domain-verification-xrqg0d=N92QIIZz9FNvtn4fSM1aoPTO1
adobe-idp-site-verification=9e57bf0f6edf53f07c7e039868b4f1b6e51536bc50f7255586f5a051249a4b00
anthropic-domain-verification-p3fytn=4myoRaTfbTRj8r93Fnrc8PeBP
apple-domain-verification=E83skdQtNdPkgEvx
asv=6c481b8fcada1fb56d4e8e0ccd7208f0
atlassian-domain-verification=OXy2BCofte+qLejwrfnCxs/Pm8TcOUDHlycMrojlzUJ/hzQc7PDgZVdEihLTea5c
browserstack-domain-verification=6f82b2a8-d15d-4a47-9a81-da069dd2f881
ca3-3c24d93a383144a0bdad160ad7c82865
canva-site-verification=GNYR54YC11sX8gSczA-szA
cursor-domain-verification-vcq0r5=8pn2RjjwRJZLokxvYx3GYAzYU
datadome-domain-verify=pc6oVOH4qBXbYP94ilrYjZXeqoTA9sbm
docker-verification=458a255c-9892-4f40-bb58-32dc4811bdb9
docusign=627c5187-2423-42c0-a3f0-278758c4283c
drift-domain-verification=8196ac83113fbfe9f3f5dd7ffed50a14964ba3d4ea9af6cdc1c4e3ed97e6e586
dropbox-domain-verification=o0e3d0avitf1
dtm-domain-verification=FCnAP6jpNNl2B8YRarqOO1EJHEnVXr9fEGrzYV--wIc
gc-ai-domain-verification-pc2v6s=09X7oJZYdfL6AvlbjXcI469Ba
globalsign-domain-verification=7dd614ba6dd6b9a1e8bb3ef1ff022f0f
google-site-verification=20wDk1W7cenZNN_2nI4_3Cv0vIEgX-f01PKr9Q2WscY
google-site-verification=5SIzMNGlSoiCQuhIrrcyrIqMTk9YH4kt4iCQL0XBo2M
google-site-verification=NmfDaHgZeLxx0qRsM_zeFNn1J-213gjIqwnrOTyyKy8
google-site-verification=pRVCjM-gUtlyHfDfIAOwBxj4-AdMDePqCZRcr4T_Zxo
google-site-verification=wPBMnK_Ong5WdKdVY6JYLMG0S1HG3HrxPocpAHWVKuM
heroku-domain-verification=wrare/xqhd48vkst3byzdi7lugaqyxbxvbrrkye0
hubspot-domain-verification=ZjFhNmQ2MmMtOWExZi00NTg5LTllNzEtZThkZjM3OWRhMGM2
intacct-esk=7AA99D8B166B145DE053AA06A8C0FBF2
jamf-site-verification=9SZ0nz0ZXYgAmDMdrW3BAg
jetbrains-domain-verification=2stm47stmtre2f99umyajv4o0
klaviyo-site-verification=9BX3wh
klaviyo-site-verification=SMJmWs
klaviyo-site-verification=TZXu9S
klaviyo-site-verification=Wu9D8K
klaviyo-site-verification=WuUF6j
klaviyo-site-verification=Xe29Mw
klaviyo-site-verification=Xtm4hg
lens-lbid-domain-verification=9f414c1b-89f7-4ec5-b0cf-0687b52ec5b7
linear-domain-verification=3zsgrg52kvqa
mgverify=2738a5123a92d4d285faacba79d2d41b8c5a4488952ff2beb3bfe919e7efa0f2
neat-pulse-domain-verification-gXLm7jM=e3409ce1-2253-4d88-8221-2816470f3d91
notion-domain-verification=kvOOIiv8Zqu00GzMazIIiFuDvw7492a9NUJSQFHxKii
onetrust-domain-verification=639763292aa5451481573f1f42492982
openai-domain-verification=dv-xPGOqjqTkH3kutBbEPY6zmI6
postman-domain-verification=23ffcfa891237c623fb193f99c4fe97a0484f7302a1b9af0f73256e7ad2a8854f7e7df74b40909ff20eb80e62156ece959655e23ccc0fcce039e895eb1230f83
serval-domain-verification-r53d2z=P6frveTaYHj7HEIkCrNmXzgMq
slack-domain-verification=KZ0bYU8HYDWuPIRIiDMntP9BBhG6qVSflSNQXr5v
spacelift-domain-verification=saSw207145tw
stripe-verification=4ec3ce1f62291184401c65000810ada6ef32ac41d70b19375bcdbd1f31481e76
teamviewer-sso-verification=bf196ae73f9f446c96f825391e37ef76
v=spf1 include:mg-spf.greenhouse.io include:_spf.google.com include:mail.zendesk.com include:emailus.freshservice.com include:_spf.salesforce.com ip4:4.7.16.128/26 ip4:38.108.186.0/24 ~all
vercel-domain-verification-x0wg9c=YI2NTJwWD7mvIwSYkP3bdNETQ
wework-site-verification=ybqQeWV4vGyuvvZD
work-accounts-domain-verification=R8vqRwAZuFvpm7vlQDpnvO5HUfexFa
RegistrationNameCheap, Inc.
registrarNameCheap, Inc.
registered2012-03-29
expires2032-03-29
last changed2023-01-30
ownerPrivacy service provided by WITHHELD FOR PRIVACY LLC
nameserversns-1372.awsdns-43.org
ns-1555.awsdns-02.co.uk
ns-224.awsdns-28.com
ns-963.awsdns-56.net
statusclient transfer prohibited
registered 2012-03-29expires 2032-03-29
HTTPS certificate111 days left
validyes
issuerAmazon
coversklaviyo.com
protocolTLSv1.3
issued 2026-01-17expires 2027-02-15
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → klaviyo.com
Email authenticationexcellent
SPFpass v=spf1 include:mg-spf.greenhouse.io include:_spf.google.com include:mail.zendesk.com include:emailus.freshservice.com include:_spf.salesforce.com ip4:4.7.16.128/26 ip4:38.108.186.0/24 ~all
DMARCpass policy reject
DKIMfound: google, 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 · 14 lookups
SURBL MultidomainURIBL MultidomainSpamCop18.165.83.109Barracuda18.165.83.109UCEPROTECT Level 118.165.83.109SpamCop18.165.83.97Barracuda18.165.83.97UCEPROTECT Level 118.165.83.97SpamCop18.165.83.46Barracuda18.165.83.46UCEPROTECT Level 118.165.83.46SpamCop18.165.83.92Barracuda18.165.83.92UCEPROTECT Level 118.165.83.92

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=klaviyo.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=klaviyo.com"

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

Watch klaviyo.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