HOW.IS
?

How is scientificamerican.com?

Looks fine risk 0/100

Registered 29 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 63 ms.

Why

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

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

How scientificamerican.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
63 ms · ends at www.scientificamerican.com
HTTPS
194 d
left on a Amazon certificate
Age
29 years
registered 1997-05-02
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A3.171.38.37
3.171.38.19
3.171.38.114
3.171.38.86
AAAA2600:9000:28a0:4000:12:7409:4340:93a1
2600:9000:28a0:b800:12:7409:4340:93a1
2600:9000:28a0:e200:12:7409:4340:93a1
2600:9000:28a0:8200:12:7409:4340:93a1
2600:9000:28a0:4600:12:7409:4340:93a1
2600:9000:28a0:c400:12:7409:4340:93a1
2600:9000:28a0:9c00:12:7409:4340:93a1
2600:9000:28a0:ea00:12:7409:4340:93a1
MX0 null.scientificamerican.com
NSns-1137.awsdns-14.org
ns-918.awsdns-50.net
ns-265.awsdns-33.com
ns-1733.awsdns-24.co.uk
TXTairtable-verification=7b2f198dbf792dce652c2d44aef7058a
v=spf1 -all
google-site-verification=LnqMHfT4GQvaYq57jqUePbMh3PABoiEL_dQHZi4wksQ
--CC4tqSa5FE5Ef9EcpPTQT_Eps"
_globalsign-domain-verification=l_BNpBAnk-rKZRyXJ9UkBfv9o6EEuuenkBrGpYNYo0
google-site-verification=lB4TLluqz5GNWMk-1ixJZWsYi80wCX_GfMZXa-qYnvg
google-site-verification=aW6PYkTCxX7iGeCKYawpfWCKDvk-2mdhlqa9VLSHx5Q
klaviyo-site-verification=WEer5A
google-site-verification=Iqpxw0SAZ49l5fAR5YT2ZOji7qnCetcUpTbvlpITGME
Hello GlobalSign CEOS1602043687
_globalsign-domain-verification=aQIRcZ4Sa1SmXZlbSPt5QrVI6ozleqa0sPLU-bElLs
_globalsign-domain-verification=IG4UdrI9gc_SVSE132aTagdWhxkvONdbIBhHhhcMlP
facebook-domain-verification=jdhhbhjmhg280yczsbslj24j4ixwty
amazonses:z/xWv8zW4whMBWPvXhcdJ41fhYxtB3sQ6lRA41p7KuY=
RegistrationGoDaddy.com, LLC
registrarGoDaddy.com, LLC
registered1997-05-02
expires2028-05-03
last changed2026-08-27
ownerDomains By Proxy, LLC
nameserversns-1137.awsdns-14.org
ns-1733.awsdns-24.co.uk
ns-265.awsdns-33.com
ns-918.awsdns-50.net
statusclient delete prohibited
client renew prohibited
client transfer prohibited
client update prohibited
delete prohibited
transfer prohibited
renew prohibited
update prohibited
registered 1997-05-02expires 2028-05-03
HTTPS certificate194 days left
validyes
issuerAmazon
coversscientificamerican.com, *.sciam.com, sciam.com, *.scientificamerican.com
protocolTLSv1.3
issued 2026-10-28expires 2027-05-13
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → scientificamerican.com
Email authenticationgood
SPFpass v=spf1 -all
DMARCpass policy reject
DKIMnone of 1 common selectors

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

Security scoregrade B · 165/205
Basic Security
20/40missing: DNSSEC Enabled
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
20/25missing: Mail Server Configuration
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 14 lookups
SURBL MultidomainURIBL MultidomainSpamCop3.171.38.19Barracuda3.171.38.19UCEPROTECT Level 13.171.38.19SpamCop3.171.38.114Barracuda3.171.38.114UCEPROTECT Level 13.171.38.114SpamCop3.171.38.37Barracuda3.171.38.37UCEPROTECT Level 13.171.38.37SpamCop3.171.38.86Barracuda3.171.38.86UCEPROTECT Level 13.171.38.86

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=scientificamerican.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=scientificamerican.com"

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

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

Watch scientificamerican.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