How is ptt.cc?

Be careful risk 20/100

Registered 25 years ago, on no blocklists we checked, no valid HTTPS certificate, the site did not answer (ConnectionRefusedError).

Why

02050100

finecarefulhigh risk

+20No valid HTTPS certificate.

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

Site

down

ConnectionRefusedError

HTTPS

invalid

connect ECONNREFUSED 140.112.172.1:443

Age

25 years

registered 2002-01-18

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	140.112.172.11 140.112.172.4 140.112.172.5 140.112.172.1 140.112.172.2 140.112.172.3
MX	5 node.ptt.cc 10 node.ptt.cc
NS	violet.ns.cloudflare.com scott.ns.cloudflare.com
TXT	yahoo-verification-key=0+lks2pv23i4x2OW4PEQUUA2nui/y0m4GORZcqREPE0= v=spf1 mx ip4:140.112.172.0/27 include:_spf.google.com ~all google-site-verification=COMh45oChbGjRX0fBgyPQtyS3SLozKkA9fxiWvSMRik

RegistrationNetwork Solutions, LLC

registrar	Network Solutions, LLC
registered	2002-01-18
expires	2027-01-19
last changed	2017-01-19
owner	hidden by privacy service
nameservers	scott.ns.cloudflare.com violet.ns.cloudflare.com
status	client transfer prohibited active

registered 2002-01-18expires 2027-01-19

HTTPS certificatenot valid

valid	no
problem	connect ECONNREFUSED 140.112.172.1:443

DNSSECinsecure

Domain is not signed with DNSSEC

. → cc → ptt.cc

Email authenticationfair

SPF	pass `v=spf1 mx ip4:140.112.172.0/27 include:_spf.google.com ~all`
DMARC	warning policy none
DKIM	none of 1 common selectors

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

Security scoregrade B · 148/205

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

Record Security

23/45missing: CAA Records, DMARC Record, DKIM Presence

Advanced Security

20/25missing: IPv6 Support

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 17 lookups

SURBL MultidomainURIBL MultidomainSpamCop140.112.172.3Barracuda140.112.172.3UCEPROTECT Level 1140.112.172.3SpamCop140.112.172.4Barracuda140.112.172.4UCEPROTECT Level 1140.112.172.4SpamCop140.112.172.1Barracuda140.112.172.1UCEPROTECT Level 1140.112.172.1SpamCop140.112.172.5Barracuda140.112.172.5UCEPROTECT Level 1140.112.172.5SpamCop140.112.172.11Barracuda140.112.172.11UCEPROTECT Level 1140.112.172.11

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=ptt.cc" \ -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=ptt.cc"

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

Watch ptt.cc. 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