How is trello.com?

Looks fine risk 0/100

Registered 22 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 43 ms.

Why

02050100

finecarefulhigh risk

·Nothing in the checks added risk.

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

The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.

Site

200

43 ms

HTTPS

101 d

left on a Amazon certificate

Age

22 years

registered 2004-08-20

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	3.162.125.34 3.162.125.84 3.162.125.24 3.162.125.56
MX	10 mxa-001d9801.gslb.pphosted.com 10 mxb-001d9801.gslb.pphosted.com
NS	ns-1442.awsdns-52.org ns-722.awsdns-26.net ns-402.awsdns-50.com ns-2013.awsdns-59.co.uk
TXT	google-site-verification=klLlb7yZqSKsDzIEQ_Ck9G8vJZrZUYSl7G6SYm5ugaU google-site-verification=m3SBLzut__3UbFT85xIcXyZs4CsOKfX6MrdByMh6xSM mailru-verification: 26cd15930108c82c atlassian-domain-verification=ZRphniOpyvhHV76mRmxnLkHJVrKnbeOIxmhbxb8PF6AarX0FypthxYB/r5XpVC2E slack-domain-verification=IQyaWt1Bt2nVwCvOsgj2ObAap344ynM5bV6C8zlZ google-site-verification=lFRc2QYcvrD1x-JP-sbqyEHEVFTzLiYr_s5TMwqDPGE google-site-verification=dk_f7jMXJqZs_HAQ5Qvd1LMExtsW6rL0_3vK6wMWxyM google-site-verification=L1Pv1rpciXhbLcwV1z84F6fdeNpGMIDd4nrgAzCQncc google-site-verification=UqQbR3bkx0DW0mTjn4zpy-pFaTOtklFFLgVJPLpWBfg facebook-domain-verification=5g7n6qixu6oqonzuw4igcyn2fd52yi google-site-verification=XiTuMrGYNDAcJ3h6FgJn-qK1wWhcRCTrwK7ihP4lgzQ google-site-verification=j10V2FxDCOpk-ZtvXbt0csUYbGo4uttk0VIeNN3pMwQ google-site-verification=rSOg_zfvrFkmPwI-Yg4oLj8SNdFQnPCeo9a0GtDf_y4 v=spf1 include:_spf.google.com include:_spf.salesforce.com include:spemail.trello.com include:cust-spf.exacttarget.com include:amazonses.com -all

RegistrationMarkMonitor Inc.

registrar	MarkMonitor Inc.
registered	2004-08-20
expires	2027-06-01
last changed	2026-10-31
owner	REDACTED FOR PRIVACY
nameservers	ns-1442.awsdns-52.org ns-2013.awsdns-59.co.uk ns-402.awsdns-50.com ns-722.awsdns-26.net
status	client delete prohibited client transfer prohibited client update prohibited

registered 2004-08-20expires 2027-06-01

HTTPS certificate101 days left

valid	yes
issuer	Amazon
covers	.frontend.public.atl-paas.net, bitbucket.org, .bitbucket.com, .bitbucket.io, .teamworkgraph.ai, .dataapps.shared.atlassian-3p.com, .devsphere.tools.atlassian.com, .rovo.com, .halp.com, halp.com, *.internal.atlassian.com, atlassian.design
protocol	TLSv1.3

issued 2026-07-27expires 2027-02-09

DNSSECsecure

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

. → com → trello.com

Email authenticationexcellent

SPF	pass `v=spf1 include:_spf.google.com include:_spf.salesforce.com include:spemail.trello.com include:cust-spf.exacttarget.com include:amazonses.com -all`
DMARC	pass policy reject
DKIM	found: google

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

Security scoregrade B · 160/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

30/45missing: CAA Records, DKIM Presence

Advanced Security

15/25missing: SOA Record Configuration, IPv6 Support

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 14 lookups

SURBL MultidomainURIBL MultidomainSpamCop13.227.65.104Barracuda13.227.65.104UCEPROTECT Level 113.227.65.104SpamCop13.227.65.78Barracuda13.227.65.78UCEPROTECT Level 113.227.65.78SpamCop13.227.65.52Barracuda13.227.65.52UCEPROTECT Level 113.227.65.52SpamCop13.227.65.84Barracuda13.227.65.84UCEPROTECT Level 113.227.65.84

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=trello.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=trello.com"

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

IPv6. Does trello.com work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.

Watch trello.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