HOW.IS
?

How is microsoftonline.com?

Be careful risk 20/100

Registered 24 years ago, no valid HTTPS certificate, the site did not answer (OSError).

Why

02050100
finecarefulhigh risk
  • +20No valid HTTPS certificate.

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

Site
down
OSError
HTTPS
invalid
Could not resolve host (ENODATA)
Age
24 years
registered 2002-07-09
Blocklists
0
listings across 2 lists

Everything we looked at

DNS records4 record types
MX10 messaging-microsoft-com.mail.protection.outlook.com
NSns2-38.azure-dns.net
ns1-38.azure-dns.com
ns4-38.azure-dns.info
ns3-38.azure-dns.org
TXTgoogle-site-verification=CNZTg2P9nNfuZUJdHTYBONoHbOjMq7UPVvxoqMgomfQ
v=spf1 ip4:216.32.180.228 include:spfa.microsoftonline.com include:spf-exacttarget.microsoftonline.com include:spf-msods.microsoftonline.com include:spf-mfa.microsoftonline.com include:_spf-ssg-a.microsoft.com -all
google-site-verification=y-tlrGiMNJkBF1UO4Xk0GjbVwYk3p5urCieV9B1sHJ0
CAA{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'contactemail': 'caarecordaware@microsoft.com'}
{'type': 'CAA', 'iodef': 'mailto:domains@microsoft.com', 'critical': 0}
{'type': 'CAA', 'issue': 'entrust.net', 'critical': 0}
{'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0}
{'type': 'CAA', 'issue': 'microsoft.com', 'critical': 0}
RegistrationMarkMonitor Inc.
registrarMarkMonitor Inc.
registered2002-07-09
expires2027-07-09
last changed2026-06-07
ownerMicrosoft Corporation
nameserversns1-38.azure-dns.com
ns2-38.azure-dns.net
ns3-38.azure-dns.org
ns4-38.azure-dns.info
statusclient delete prohibited
client transfer prohibited
client update prohibited
server delete prohibited
server transfer prohibited
server update prohibited
registered 2002-07-09expires 2027-07-09
HTTPS certificatenot valid
validno
problemCould not resolve host (ENODATA)
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → microsoftonline.com
Email authenticationgood
SPFpass v=spf1 ip4:216.32.180.228 include:spfa.microsoftonline.com include:spf-exacttarget.microsoftonline.com include:spf-msods.microsoftonline.com include:spf-mfa.microsoftonline.com include:_spf-ssg-a.microsoft.com -all
DMARCpass policy reject
DKIMnone of 1 common selectors

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

Security scoregrade B · 155/190
Basic Security
20/40missing: DNSSEC Enabled
Record Security
45/45missing: DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, SOA Record Configuration, IPv6 Support
Domain Reputation
35/35
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 2 lookups
SURBL MultidomainURIBL Multidomain

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=microsoftonline.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=microsoftonline.com"

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

Watch microsoftonline.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