HOW.IS
?

How is zillow.com?

Be careful risk 20/100

Registered 22 years ago, on no blocklists we checked, no valid HTTPS certificate, the site answered 200 in 428 ms.

Why

02050100
finecarefulhigh risk
  • +20No valid HTTPS certificate.

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

How zillow.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
428 ms · ends at www.zillow.com
HTTPS
invalid
Could not resolve host (EREFUSED)
Age
22 years
registered 2004-09-16
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A13.226.209.103
13.226.209.40
13.226.209.56
13.226.209.4
MX1 smtp.google.com
NSns-1126.awsdns-12.org
ns-709.awsdns-24.net
ns-188.awsdns-23.com
ns-1978.awsdns-55.co.uk
TXTadobe-idp-site-verification=d5bc3993e341ec9e2211f76c8437d1b427f8dc2b67fcaaad95e24c512beab351
docusign=d41b9d07-a056-4736-b25a-bfd9493bbcc9
slack-domain-verification=SCiUKlfWV8dWeasWT0pgvLj2kDQJS7uSQSqbwf78
zapier-domain-verification-challenge=0f703ce2-8795-4c0c-88cf-ca04af96a128
ZOOM_verify_g3zmMzzxSbyRGE80XhMPaQ
apple-domain-verification=QPRde8ebYlB5qiWJLg5jy_lqZtfEs1qhV3kkahf-wVU
facebook-domain-verification=oza42xuvjx7gi2qkqu214fdfdn83sh
google-site-verification=vj5n_vwgH6UQqF3EpXUf2TCCwkF0L261STagywmS6kk
atlassian-domain-verification=dgV3G6mkX85097hkLZzFLTjyRE9EyRvlj3HkR+RR47uo2ISUcEVxf2tau9+TrpSZ
00D1U000000yLjx=1TBa700000001gs
v=spf1 include:spf.protection.outlook.com include:mail.zendesk.com include:_spf.salesforce.com include:_spf1.zillow.com include:_spf.google.com a:c.spf.service-now.com a:zgateway.zuora.com ip4:167.89.48.88 ~all
CAA{'type': 'CAA', 'critical': 0, 'issuewild': 'awstrust.com'}
RegistrationGoDaddy Corporate Domains, LLC
registrarGoDaddy Corporate Domains, LLC
registered2004-09-16
expires2028-11-11
last changed2026-07-22
nameserversns-1126.awsdns-12.org
ns-188.awsdns-23.com
ns-1978.awsdns-55.co.uk
ns-709.awsdns-24.net
statusclient transfer prohibited
server delete prohibited
server transfer prohibited
server update prohibited
registered 2004-09-16expires 2028-11-11
HTTPS certificatenot valid
validno
problemCould not resolve host (EREFUSED)
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → zillow.com
Email authenticationexcellent
SPFpass v=spf1 include:spf.protection.outlook.com include:mail.zendesk.com include:_spf.salesforce.com include:_spf1.zillow.com include:_spf.google.com a:c.spf.service-now.com a:zgateway.zuora.com ip4:167.89.48.88 ~all
DMARCpass policy quarantine
DKIMfound: google, selector1

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

Security scoregrade A · 175/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
45/45missing: DKIM Presence
Advanced Security
15/25missing: Mail Server Configuration, IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 14 lookups
SURBL MultidomainURIBL MultidomainSpamCop13.226.209.40Barracuda13.226.209.40UCEPROTECT Level 113.226.209.40SpamCop13.226.209.56Barracuda13.226.209.56UCEPROTECT Level 113.226.209.56SpamCop13.226.209.103Barracuda13.226.209.103UCEPROTECT Level 113.226.209.103SpamCop13.226.209.4Barracuda13.226.209.4UCEPROTECT Level 113.226.209.4

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=zillow.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=zillow.com"

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

Watch zillow.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