On no blocklists we checked, no valid HTTPS certificate, the site did not answer (SSLError).
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.
| A | 36.153.95.133 |
|---|---|
| AAAA | 240e:90d:1101:203:3dab:c5e8:9874:fffe |
| NS | ns210.dns.cf-ns.com ns88.dns.cf-ns.net |
| TXT | 0 contactemail hostmaster@visa.com cwj402d2nw8cqbsyt8k7vv7v98wqf9ft |
| CAA | {'type': 'CAA', 'iodef': 'mailto:hostmaster@visa.com', 'critical': 0} |
| registrar | 码恪御标信息科技(上海)有限公司 |
|---|---|
| nameservers | ns210.dns.cf-ns.com ns88.dns.cf-ns.net |
| status | clientDeleteProhibited clientUpdateProhibited clientTransferProhibited |
| valid | no |
|---|---|
| problem | 809DC7980A7F0000:error:0A000410:SSL routines:ssl3_read_bytes:ssl/tls alert handshake failure:ssl/record/rec_layer_s3.c:918:SSL alert number 40 |
Domain is not signed with DNSSEC
| SPF | none |
|---|---|
| DMARC | pass policy reject |
| DKIM | none of 1 common selectors |
Whether mail claiming to be from this domain can be checked as genuine.
Green: clean. Red: listed. Grey: the list did not answer.
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.
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on visa.cn.
Reference: /llms.txt.
IPv6. Does visa.cn work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.
Watch visa.cn. 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