HOW.IS
?

How is outlook.com?

Looks fine risk 0/100

Registered 32 years ago, on no blocklists we checked, valid HTTPS, the site answered HTTP 417.

Why

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

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

Site
417
495 ms
HTTPS
186 d
left on a DigiCert Inc certificate
Age
32 years
registered 1994-08-18
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A52.96.111.82
52.96.172.98
52.96.222.194
52.96.91.34
52.96.223.2
52.96.228.130
52.96.214.50
52.96.229.242
52.96.222.226
MX5 outlook-com.olc.protection.outlook.com
NSns1-05.azure-dns.com
ns2-05.azure-dns.net
ns4-05.azure-dns.info
ns3-05.azure-dns.org
TXT_ofl74f250a84g188pro5arwqa23zle2
v=spf1 include:spf2.outlook.com -all
google-site-verification=0iLWhIMhXEkeWwWfFU4ursTn-_OvoOjaA0Lr7Pg1sEM
google-site-verification=DC2uC-T8kD33lINhNzfo0bNBrw-vrCXs5BPF5BXY56g
google-site-verification=u61khn2j2qt8IdrjskRMSZ0p_HaFURXKrSsu-uXKyNA
CAA{'type': 'CAA', 'iodef': 'mailto:caarecordaware@microsoft.com', 'critical': 0}
{'type': 'CAA', 'issue': 'entrust.net', 'critical': 0}
{'type': 'CAA', 'issue': 'microsoft.com', 'critical': 0}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'contactemail': 'caarecordaware@microsoft.com'}
{'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0}
RegistrationMarkMonitor Inc.
registrarMarkMonitor Inc.
registered1994-08-18
expires2027-08-17
last changed2026-07-16
ownerMicrosoft Corporation
nameserversns1-05.azure-dns.com
ns2-05.azure-dns.net
ns3-05.azure-dns.org
ns4-05.azure-dns.info
statusclient delete prohibited
client transfer prohibited
client update prohibited
server delete prohibited
server transfer prohibited
server update prohibited
registered 1994-08-18expires 2027-08-17
HTTPS certificate186 days left
validyes
issuerDigiCert Inc
coversoutlook.com, *.hotmail.com, *.internal.outlook.com, *.live.com, *.office.com, *.office365.com, *.outlook.com, *.outlook.office365.com, attachment.outlook.live.net, attachment.outlook.office.net, attachment.outlook.officeppe.net, attachments.office.net
protocolTLSv1.3
issued 2026-10-13expires 2027-04-29
DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → com → outlook.com
Email authenticationgood
SPFpass v=spf1 include:spf2.outlook.com -all
DMARCwarning policy none
DKIMfound: selector1, selector2

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

Security scoregrade B · 163/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
38/45missing: DMARC Record, DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, SOA Record Configuration, IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 17 lookups
SURBL MultidomainURIBL MultidomainSpamCop52.96.91.34Barracuda52.96.91.34UCEPROTECT Level 152.96.91.34SpamCop52.96.222.194Barracuda52.96.222.194UCEPROTECT Level 152.96.222.194SpamCop52.96.223.2Barracuda52.96.223.2UCEPROTECT Level 152.96.223.2SpamCop52.96.229.242Barracuda52.96.229.242UCEPROTECT Level 152.96.229.242SpamCop52.96.228.130Barracuda52.96.228.130UCEPROTECT Level 152.96.228.130

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=outlook.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=outlook.com"

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

Watch outlook.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