How is bootstrapcdn.com?

Looks fine risk 0/100

Registered 14 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 77 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

77 ms · ends at www.bootstrapcdn.com

HTTPS

85 d

left on a Google Trust Services certificate

Age

14 years

registered 2012-05-25

Blocklists

listings across 5 lists

Everything we looked at

DNS records3 record types

A	104.18.10.207 104.18.11.207
AAAA	2606:4700::6812:acf 2606:4700::6812:bcf
NS	keenan.ns.cloudflare.com brenda.ns.cloudflare.com

RegistrationAmazon Registrar, Inc.

registrar	Amazon Registrar, Inc.
registered	2012-05-25
expires	2027-05-25
last changed	2026-05-16
owner	c/o whoisproxy.com
nameservers	brenda.ns.cloudflare.com keenan.ns.cloudflare.com
status	client transfer prohibited

registered 2012-05-25expires 2027-05-25

HTTPS certificate85 days left

valid	yes
issuer	Google Trust Services
covers	bootstrapcdn.com, *.bootstrapcdn.com
protocol	TLSv1.3

issued 2026-10-27expires 2027-01-25

DNSSECinsecure

Domain is not signed with DNSSEC

. → com → bootstrapcdn.com

Email authenticationpoor

SPF	none
DMARC	none
DKIM	none of 1 common selectors

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

Security scoregrade C · 120/205

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

Record Security

0/45missing: CAA Records, SPF Record, DMARC Record, DKIM Presence

Advanced Security

15/25missing: Mail Server Configuration

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 8 lookups

SURBL MultidomainURIBL MultidomainSpamCop104.18.11.207Barracuda104.18.11.207UCEPROTECT Level 1104.18.11.207SpamCop104.18.10.207Barracuda104.18.10.207UCEPROTECT Level 1104.18.10.207

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=bootstrapcdn.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=bootstrapcdn.com"

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

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

Watch bootstrapcdn.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