Registered 27 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 842 ms.
Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

| A | 15.175.254.183 15.156.53.151 |
|---|---|
| MX | 10 mail.synology.com 20 usmail.synology.com |
| NS | ns-1064.awsdns-05.org ns-1712.awsdns-22.co.uk ns-705.awsdns-24.net ns-498.awsdns-62.com |
| TXT | google-site-verification=ALTosOMjfqO1e3waISlqUtAWVDPbkd1xTc2zZTecJEI v=spf1 mx:synology.com include:_spf.salesforce.com include:amazonses.com include:spf.mandrillapp.com include:_spf.getresponse.com include:md02.com include:eu.zeptomail.net include:_spf.prtimes.jp ip4:63.145.198.179 -all google-site-verification=XrSxJM15m-RvajbL3iwihOg5rO0KKqzKb_48F5Tck54 google-site-verification=2uuWSS-PQu_3wdAfpKznMi8j_LmMJNNxDCo5CQBl-qw google-site-verification=vpw-OR-MsiNlWHU3DZRHsOZ_hKvDFg15c4_4uoJnX5c google-site-verification=JVX3mTh4Tf0UkH7dbWDkRXj2sxVsD9BG5vhu_fme_eE google-site-verification=yye3FPh6LcNp7ErWXUcEB7XEMehHrKd3ThjBMmsV7mc google-site-verification=oEu3aTafSQVDp6sVDpw4LjuD__uSttkuVlGkAGqLypc google-site-verification=BbJczAIhIiCLaNKZgHnZmvApYcQ15k3hu1rsrNWFdWs google-site-verification=iZjYDwFil9JWa4480fxaMOv0B0Gn_47rgtpuoRRN-iE ZA=zRLoTz+5H4NqLuCfaPj4/w== MS=ms48619058 anthropic-domain-verification-a82d8d=Dx6SNXivdGm8t9Eug8D9MMQ6V anthropic-domain-verification-0hq1xt=Ig49o2l6soqYVx024oWSWjaDz |
| CAA | {'type': 'CAA', 'issue': 'digicert.com', 'critical': 0} {'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0} {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0} {'type': 'CAA', 'issue': 'amazon.com', 'critical': 0} {'type': 'CAA', 'issue': 'godaddy.com', 'critical': 0} |
| registrar | GoDaddy.com, LLC |
|---|---|
| registered | 2000-01-29 |
| expires | 2030-01-29 |
| last changed | 2024-04-03 |
| nameservers | ns-1064.awsdns-05.org ns-1712.awsdns-22.co.uk ns-498.awsdns-62.com ns-705.awsdns-24.net |
| status | client delete prohibited client renew prohibited client transfer prohibited client update prohibited |
| valid | yes |
|---|---|
| issuer | Amazon |
| covers | synology.com |
| protocol | TLSv1.2 |
Domain is properly signed — chain validated by an independent validating resolver
| SPF | pass v=spf1 mx:synology.com include:_spf.salesforce.com include:amazonses.com include:spf.mandrillapp.com include:_spf.getresponse.com include:md02.com include:eu.zeptomail.net include:_spf.prtimes.jp ip4:63.145.198.179 -all |
|---|---|
| DMARC | pass policy quarantine |
| DKIM | none of 20 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 synology.com.
Reference: /llms.txt.
Watch synology.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