HOW.IS
?

How is githubusercontent.com?

Be careful risk 20/100

Registered 13 years ago, no valid HTTPS certificate, the site did not answer (OSError).

Why

02050100
finecarefulhigh risk
  • +20No valid HTTPS certificate.

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

Site
down
OSError
HTTPS
invalid
Could not resolve host (ENODATA)
Age
13 years
registered 2014-02-06
Blocklists
0
listings across 2 lists

Everything we looked at

DNS records3 record types
NSdns4.p01.nsone.net
ns-181.awsdns-22.com
ns-596.awsdns-10.net
dns3.p01.nsone.net
ns-1411.awsdns-48.org
dns1.p01.nsone.net
ns-1867.awsdns-41.co.uk
dns2.p01.nsone.net
TXTglobalsign-domain-verification=2wiwCKYW7kQ6LJntfIcdi5EG56lUlQIRj_VGJnEEKb
v=spf1 a -all
CAA{'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'digicert.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'sectigo.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'letsencrypt.org'}
RegistrationMarkMonitor Inc.
registrarMarkMonitor Inc.
registered2014-02-06
expires2028-02-06
last changed2026-01-05
ownerREDACTED FOR PRIVACY
nameserversdns1.p01.nsone.net
dns2.p01.nsone.net
dns3.p01.nsone.net
dns4.p01.nsone.net
ns-1411.awsdns-48.org
ns-181.awsdns-22.com
ns-1867.awsdns-41.co.uk
ns-596.awsdns-10.net
statusclient delete prohibited
client transfer prohibited
client update prohibited
registered 2014-02-06expires 2028-02-06
HTTPS certificatenot valid
validno
problemCould not resolve host (ENODATA)
DNSSECinsecure

Domain is not signed with DNSSEC

. → com → githubusercontent.com
Email authenticationpoor
SPFpass v=spf1 a -all
DMARCnone
DKIMnone of 1 common selectors

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

Security scoregrade B · 140/190
Basic Security
20/40missing: DNSSEC Enabled
Record Security
30/45missing: DMARC Record, DKIM Presence
Advanced Security
10/25missing: Mail Server Configuration, IPv6 Support
Domain Reputation
35/35
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 2 lookups
SURBL MultidomainURIBL Multidomain

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=githubusercontent.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=githubusercontent.com"

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

Watch githubusercontent.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