HOW.IS
?

How is testbook.com?

Looks fine risk 0/100

Registered 23 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 59 ms.

Why

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

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

How testbook.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
59 ms
HTTPS
80 d
left on a Sectigo Limited certificate
Age
23 years
registered 2004-01-08
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records6 record types
A172.66.145.178
104.20.17.199
AAAA2606:4700:10::ac42:91b2
2606:4700:10::6814:11c7
MX20 alt1.aspmx.l.google.com
30 alt4.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 alt3.aspmx.l.google.com
10 aspmx.l.google.com
NSalbert.ns.cloudflare.com
rafe.ns.cloudflare.com
TXTgoogle-site-verification=_kmwwe-m1zaowK8JigEAZD63oD9I4tchHrbtvkkCLps
google-site-verification=xrodwTX05C8GMu1gK5XukTCrocpazmfRqll29Tw65Mo
google-site-verification=bZfL2FttTmFpL__WKO1zoT4hCGjJnhYk7Lswwpre2As
google-site-verification=MbBxqmOix5Nsqz08KWceNNt5uOKoJK-Z8HicD5GzGcU
google-site-verification=GQUcD9leXR2n9K8p7MTn0phlKudO7N3IkYA3ZR_3hgM
google-site-verification=WHABehekZZpqxDhI-yYpOQeGAG7alqIFH1teuMOqKrE
google-amphtml-update-api-key=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA11EWbD9YB8G1A8JNendKl3vTuf3rXINQWsOKOMcEb+C0tlipRvHwfQ2S8HSHsnwP+twk0ic4XUXd0b+NpOLyeknQd3jVbVBRUD+ZXZ+lv7sxGEVrVGGyJlR6PIeAcf3HWOVlH3HXmkEmcuSCAaizWqfR51POV0HuIsqMZXaf2sBEL1y+WCwubWrcvDDV049gASCtplRe4zYFclC2nOP/nkZwGcUVYtfqivUOwYnkX27KLc1MQL5pRnWTrKQZxyzqN9UsnCCB8uiBXZ+spZ3m97xnyVDOKEIaz6dPoFLrvQ9cJ1/NImpboeU2D1NIqUzYE/djolR9IVgFGQymOT9xNwIDAQAB
facebook-domain-verification=7hg9055adtaoumm931vl3fuiwswnli
google-site-verification=BJjkxiU_LRRmYKvqiRemN5l7mpjWsZgMbG7WzRWf4Cs
v=spf1 include:_spf.mlsend.com include:amazonses.com include:_spf.google.com include:smtp1.uservoice.com -all
google-site-verification=8Ix3qDZhRnke2ZBaluVY5F2E6-gK-UenzvnBEn7n1G4
openai-domain-verification=dv-tDtUlOwHnwYAf2C3Ahlnz2pf
MS=D2D1943495DE25F9AB4B9F552606800901B83DA9
google-site-verification=HZUcUWKbiKEhFeBykG2DX5jtIG8nbxo8iWB9c3Wzc6Y
google-site-verification=62PQnRGRpWD8Ryz6xthPy-xE6HqU5iilUxTrrNNzsUA
ahrefs-site-verification_034d9652594c6ec96236436a21227bb9e180fbdb3845f03243932ed5e1c580d0
CAA{'type': 'CAA', 'critical': 0, 'issuewild': 'digicert.com; cansignhttpexchanges=yes'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'ssl.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'comodoca.com'}
{'type': 'CAA', 'issue': 'pki.goog; cansignhttpexchanges=yes', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'pki.goog; cansignhttpexchanges=yes'}
{'type': 'CAA', 'issue': 'comodoca.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'letsencrypt.org'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'sectigo.com'}
{'type': 'CAA', 'issue': 'digicert.com; cansignhttpexchanges=yes', 'critical': 0}
{'type': 'CAA', 'issue': 'ssl.com', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
RegistrationName.com, Inc.
registrarName.com, Inc.
registered2004-01-08
expires2029-01-08
last changed2023-12-11
ownerDomain Protection Services, Inc.
nameserversalbert.ns.cloudflare.com
rafe.ns.cloudflare.com
statusclient transfer prohibited
transfer prohibited
registered 2004-01-08expires 2029-01-08
HTTPS certificate80 days left
validyes
issuerSectigo Limited
covers*.testbook.com, testbook.com
protocolTLSv1.3
issued 2025-12-19expires 2027-01-18
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → testbook.com
Email authenticationgood
SPFpass v=spf1 include:_spf.mlsend.com include:amazonses.com include:_spf.google.com include:smtp1.uservoice.com -all
DMARCwarning policy quarantine
DKIMfound: google

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

Security scoregrade A · 175/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
25/25
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 8 lookups
SURBL MultidomainURIBL MultidomainSpamCop104.20.17.199Barracuda104.20.17.199UCEPROTECT Level 1104.20.17.199SpamCop172.66.145.178Barracuda172.66.145.178UCEPROTECT Level 1172.66.145.178

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=testbook.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=testbook.com"

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

Watch testbook.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