How is iso.org?
Looks fine
risk 0/100
Registered 31 years ago, on no blocklists we checked, valid HTTPS, the site answered 403 in 84 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
403
84 ms
HTTPS
33 d
left on a Let's Encrypt certificate
Age
31 years
registered 1995-12-10
Blocklists
0
listings across 4 lists; 1 did not answer
Everything we looked at
DNS records5 record types
| A | 104.18.16.124 104.18.17.124 |
|---|---|
| AAAA | 2606:4700::6812:107c 2606:4700::6812:117c |
| MX | 3 iso-org.mail.protection.outlook.com |
| NS | sullivan.ns.cloudflare.com lila.ns.cloudflare.com |
| TXT | cIwPx4DArUweSVvQ7moZhi6Vf+bDm3dIx8CaORjJWKq8l8SdS66xy7PAtyznT3dRwnsHGz5UD2SE9ABnD5R0Dw== asv=67a3eedb720b95b4472cad2193c46417 status-page-domain-verification=bmmcdgbglcnl google-site-verification=a1GIw2uruZhHexqI8XtXs_S_AJo1PrpXZXeBOIVidEE google-site-verification=mQuqWPbWruZdQgZR8QwbxOWnjjxkcFiyJLHWY-cOOHk apple-domain-verification=wnwkP1mIM04WKHoN facebook-domain-verification=8q5hr26xd7szjwlojgz73q8ywtq290 v=spf1 ip4:138.81.34.16/29 include:spf.protection.outlook.com ip4:18.168.51.200 ip4:18.168.140.58 ip4:148.59.101.16/28 ip4:3.123.206.219 ip4:3.68.129.51 include:_spf.createsend.com include:stspg-customer.com include:_spf.salesforce.com include:amazonses.com include:helpscoutemail.com mx -all anthropic-domain-verification-wyqhyp=MODDUUtyNevqXdhXEbBLNgt42 google-site-verification=Fm-ULAi77AaKjxa3cUlbAPCNeDZHgQOIERKD9No7uAk atlassian-sending-domain-verification=f9f2180b-ea17-4597-b139-2a87c8c0defe amazonses:YMUKAeXZEply1hXHEIDcwAVhjrtSwUyrjHCPhFOY8O8= MS=ms69091019 atlassian-domain-verification=cXC66kttofLywGG4s6XjXIJOQT9YHHJo776ISr020tdLn5hhYfcPqaKO5VPJjKt/ status-page-domain-verification=pykrh4j41z6d |
RegistrationCSL Computer Service Langenbach GmbH d/b/a joker.com
| registrar | CSL Computer Service Langenbach GmbH d/b/a joker.com |
|---|---|
| registered | 1995-12-10 |
| expires | 2029-12-09 |
| last changed | 2026-08-12 |
| nameservers | lila.ns.cloudflare.com sullivan.ns.cloudflare.com |
| status | client transfer prohibited |
registered 1995-12-10expires 2029-12-09
HTTPS certificate33 days left
| valid | yes |
|---|---|
| issuer | Let's Encrypt |
| covers | *.iso.org, iso.org |
| protocol | TLSv1.3 |
issued 2026-09-01expires 2026-11-30
DNSSECinsecure
Domain is not signed with DNSSEC
. → org → iso.org
Email authenticationexcellent
| SPF | pass v=spf1 ip4:138.81.34.16/29 include:spf.protection.outlook.com ip4:18.168.51.200 ip4:18.168.140.58 ip4:148.59.101.16/28 ip4:3.123.206.219 ip4:3.68.129.51 include:_spf.createsend.com include:stspg-customer.com include:_spf.salesforce.com include:amazonses.com include:helpscoutemail.com mx -all |
|---|---|
| DMARC | pass policy quarantine |
| DKIM | found: selector1, selector2, smtp |
Whether mail claiming to be from this domain can be checked as genuine.
Security scoregrade B · 155/205
Basic Security10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security30/45missing: CAA Records, DKIM Presence
Advanced Security20/25missing: Mail Server Configuration
Domain Reputation50/50
Threat Detection45/45missing: Domain Age Check
Blocklists0 listings · 8 lookups
SURBL MultidomainURIBL MultidomainSpamCop104.18.17.124Barracuda104.18.17.124UCEPROTECT Level 1104.18.17.124SpamCop104.18.16.124Barracuda104.18.16.124UCEPROTECT Level 1104.18.16.124
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=iso.org" \
-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=iso.org"
MCP: add https://how.is/mcp to Claude, Codex or Cursor
(one-line install) and ask for domain_trust on iso.org.
Reference: /llms.txt.
Watch iso.org. 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