HOW.IS
?

How is nubank.com.br?

Looks fine risk 0/100

Registered 13 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 108 ms.

Why

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

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

How nubank.com.br looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
108 ms
HTTPS
77 d
left on a Amazon certificate
Age
13 years
registered 2013-11-20
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A3.170.19.51
3.170.19.72
3.170.19.54
3.170.19.25
MX1 aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
NSns-1460.awsdns-54.org
ns-1569.awsdns-04.co.uk
ns-340.awsdns-42.com
ns-736.awsdns-28.net
TXT1password-site-verification=TMU3ZZN5WFFMPCN4EBDRBNL7GQ
4CcmptAv6Sy+YNB6HcptROTycd8QMFaS3mo4oK2qwUU=
MS=ms84751479
_globalsign-domain-verification=3yVViME4ns2Qo4ZmvqAgQAXbhTto8nO9WLYjFvC1XJ
_globalsign-domain-verification=QadbaC0E_WDSlUaXnQ1NtPBsiNbpNGbrMVoQo7kNCH
_globalsign-domain-verification=VmC1J5DGfzzqJyAjryunADDcwWqcXFZ9uqTQjJiRrQ
_globalsign-domain-verification=blGpPHSAXf4Hey2a4djhJU4SpiBuvOJemeSNxh0Fkq
_globalsign-domain-verification=hj1Is-QvOlc80bZAAdaNaADxj3ULc92fpzbaLlWJLr
_globalsign-domain-verification=iiaoqzoSRMDAZwHQ1fTkwfoSiz0eBKrL5HWO1682Yy
adobe-idp-site-verification=2dee39e70bd413767a505a950bdba1f62123c41f1c12116eb09749620a4e2206
anthropic-domain-verification-kgjwk6=LGq7352dVfGTWW01SwDoUwKWH
apple-domain-verification=54GVXafijpwzYvyT
apple-domain-verification=NNGzWQ_OTl52kMeodYTIvWwHjRA286418b7sEHq8ZKE
atlassian-domain-verification=4XxGBGTEV+Y0cYEcmdcVTnx3NPLBFSa+199MiTHvilyYH162ge7A3F4Vydl0/YYt
bitrise-verification=9c87c59eeb40f778-mCrHHIek8MDI
bw=+xcRit0vy9dmOdEQvjfimzdxnU9KKd70TlGioxRoobFR
bw=RKeHX8kpCnGh1MUvbxXrnb7DkwnyOEzGPfbFsoFgFPyI
cursor-domain-verification-j03a5g=FbcYWX0NlPwbXlEDe9zvNBuaj
docker-verification=7cf8788c-5045-4c7c-aaaf-e4cb15d44856
dtm-domain-verification=-5ob8ewQfdaMHxzCH8q2J-6-vZLln-O7V90cxjxq3FU
facebook-domain-verification=vfwggo8uik9iuv2x26k4a8t4cqr988
gitpod-verification=pQlWq5u0_VzEI5vzg3dC_WiobZ3XUJCHnWw3KZTlgwQ=
google-site-verification=7EVB5Wl3OtqzYVg8VQn-7aDuHZIti_dS6uunQCQDjLk
h1-domain-verification=RKapM1RPuSf4gMSsqC7usvALh69nBbTtzbYqbyTMU7CwShg8
linear-domain-verification=wd63uwvz3aas
mgverify=5a90ff535b3933a16d9c43a4a51e2ae23432c1e94c226f51d1c0dea6f605c32b
miro-verification=d1eb2dfdb8a5636ac73e3530a41f8a9c30046d9a
mongodb-site-verification=I6PLZURjjuG3G2JAEnh4MTLyyViv4Qyx
mongodb-site-verification=mJwTZ6mlDYcejScPIvidy80HE50DsUyZ
mongodb-site-verification=n3aFwxOu7WKHdsMbwcEB0T21BHove744
openai-domain-verification=dv-IafVD1O2ZGAfFYVXtCuMr1JU
postman-domain-verification=61240a3723a0ab702d8b13193afa515f59485b0f9f8f323b17a119560e8fb0231a0c52229ce5a51da5a884ed851844da4ff024af99395e50e763f268b4f6b52e
slack-domain-verification=bpjapX4qSRxNMqOsvPXK4o095AxC3GJRhXlXJbIV
stripe-verification=4E97A5D8A0F0DAA727661A7FEADAC894A644E784D729E4BBFE4AD501F9E7D88C
tac=0.MEUCIQC3R29b12vh4nNI8wO1O4xvtBqkIqs9Y2DotCafltyCpQIgFtsL2AxZ1ZSSKkxqmL2XWLHz9WB3VMC4LgQWLbcdt1M=
twilio-domain-verification=042ec0d789125d878d0565f7d0653057
v=spf1 include:_spf.nubank.com.br -all
CAA{'type': 'CAA', 'iodef': 'mailto:certificates@nubank.com.br', 'critical': 0}
{'type': 'CAA', 'issue': 'amazon.com', 'critical': 0}
{'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
{'type': 'CAA', 'issue': 'pki.goog', 'critical': 0}
{'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'amazon.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'globalsign.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'letsencrypt.org'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'pki.goog'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'sectigo.com'}
Registrationregistrar not reported
registered2013-11-20
expires2027-11-20
last changed2026-10-19
countryBR
nameserversns-340.awsdns-42.com
ns-1460.awsdns-54.org
ns-1569.awsdns-04.co.uk
ns-736.awsdns-28.net
statusactive
registered 2013-11-20expires 2027-11-20
HTTPS certificate77 days left
validyes
issuerAmazon
coversnubank.com.br, *.nubank.com.br
protocolTLSv1.3
issued 2026-07-04expires 2027-01-17
DNSSECinsecure

Domain is not signed with DNSSEC

. → br → com.br → nubank.com.br
Email authenticationexcellent
SPFpass v=spf1 include:_spf.nubank.com.br -all
DMARCpass policy reject
DKIMfound: google, k1, s1, s2

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

Security scoregrade A · 180/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
45/45missing: 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 MultidomainSpamCop3.170.19.25Barracuda3.170.19.25UCEPROTECT Level 13.170.19.25SpamCop3.170.19.54Barracuda3.170.19.54UCEPROTECT Level 13.170.19.54SpamCop3.170.19.72Barracuda3.170.19.72UCEPROTECT Level 13.170.19.72SpamCop3.170.19.51Barracuda3.170.19.51UCEPROTECT Level 13.170.19.51

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=nubank.com.br" \ -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=nubank.com.br"

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

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

Watch nubank.com.br. 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