How is classlink.com?

Looks fine risk 0/100

Registered 29 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 135 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

200

135 ms · ends at www.classlink.com

HTTPS

71 d

left on a Google Trust Services certificate

Age

29 years

registered 1998-01-30

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	198.202.211.1
MX	0 classlink-com.mail.protection.outlook.com
NS	ns-1522.awsdns-62.org ns-2026.awsdns-61.co.uk ns-828.awsdns-39.net ns-261.awsdns-32.com
TXT	atlassian-domain-verification=Umlva1cUR4QjS03+6saVBhzTV4/ulItYeC+NDmsly/D9JzcbaEr0YR89KOCPXX/U 9vu5elj96pu6pob1ecp4j5c5dd p344lhnhr36vrk6csonrdjkmc1 qbovvtand4i23tcrc8nuptig5g status-page-domain-verification=rczds3yf1nz9 anthropic-domain-verification-xjj7xz=iR7ykRURIR8m1TufjvHBSTscf logmein-verification-code=ce6036fe-d2c1-4676-980a-953230408dae Foxit-domain-verification=61cb92e4e7446ae2c9505ca5a853b955 apple-domain-verification=YkDFx5z01YEISXVD linear-domain-verification=c5ruhesasc9j google-site-verification=zwbqDXH-crJlGAYdIYG5fl9FdRzglZHal9MYPeR_klM google-site-verification=6rOpTcmbg9b4Cft2EHJWjRuWQJulhd0NmWpjFTaNBUw v=spf1 include:aspmx.pardot.com include:stspg-customer.com include:sendgrid.net include:spf.protection.outlook.com include:docebosaas.com include:_spf.salesforce.com include:servers.mcsv.net -all openai-domain-verification=dv-ed2walzHKaS2my4YbufodW2X 5je1dbqftgftqf2sapptb20988 4qr0lkf6uog34p5a1046dm0tvu

RegistrationAmazon Registrar, Inc.

registrar	Amazon Registrar, Inc.
registered	1998-01-30
expires	2027-01-29
last changed	2026-07-18
owner	c/o whoisproxy.com
nameservers	ns-1522.awsdns-62.org ns-2026.awsdns-61.co.uk ns-261.awsdns-32.com ns-828.awsdns-39.net
status	client transfer prohibited

registered 1998-01-30expires 2027-01-29

HTTPS certificate71 days left

valid	yes
issuer	Google Trust Services
covers	classlink.com
protocol	TLSv1.3

issued 2026-10-09expires 2027-01-07

DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → com → classlink.com

Email authenticationexcellent

SPF	pass `v=spf1 include:aspmx.pardot.com include:stspg-customer.com include:sendgrid.net include:spf.protection.outlook.com include:docebosaas.com include:_spf.salesforce.com include:servers.mcsv.net -all`
DMARC	pass policy reject
DKIM	found: selector1, selector2, k1, s1, s2

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

Security scoregrade B · 160/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

30/45missing: CAA Records, DKIM Presence

Advanced Security

15/25missing: Mail Server Configuration, IPv6 Support

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 5 lookups

SURBL MultidomainURIBL MultidomainSpamCop198.202.211.1Barracuda198.202.211.1UCEPROTECT Level 1198.202.211.1

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=classlink.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=classlink.com"

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

Watch classlink.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