How is dyndns.org?

Looks fine risk 0/100

Registered 28 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 607 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

607 ms · ends at account.dyn.com

HTTPS

141 d

left on a DigiCert Inc certificate

Age

28 years

registered 1998-11-22

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	138.1.125.45
MX	10 dyndns-org.mail.protection.outlook.com
NS	ns1.p201.dns.oraclecloud.net ns4.p201.dns.oraclecloud.net ns3.p201.dns.oraclecloud.net ns2.p201.dns.oraclecloud.net
TXT	MS=ms28076190 5tj7cgqkytlvvtkzdry8q8j9d8fctdpg v=spf1 mx/24 a:lists.dyndns.com ip4:63.208.196.0/24 ptr:opensrs.net include:outbound.mailhop.org include:sendlabs.com include:dynect.net include:spf.protection.outlook.com ~all google-site-verification=UWnXWHTrfdlQVC_ZvTHKHVYelA-168TLmC9pMNiUul8

RegistrationMarkMonitor Inc.

registrar	MarkMonitor Inc.
registered	1998-11-22
expires	2027-11-21
last changed	2026-10-25
owner	Oracle Corporation
nameservers	ns1.p201.dns.oraclecloud.net ns2.p201.dns.oraclecloud.net ns3.p201.dns.oraclecloud.net ns4.p201.dns.oraclecloud.net
status	client delete prohibited client transfer prohibited client update prohibited

registered 1998-11-22expires 2027-11-21

HTTPS certificate141 days left

valid	yes
issuer	DigiCert Inc
covers	dyn.com, account.dyn.com, account.dyndns.com, admin.dyndns.com, crestronapi.tzo.net, dyndns.com, dyndns.org, help.dyn.com, members.dyndns.com, members.dyndns.org, update.dyndns.com, update.dyndns.org
protocol	TLSv1.3

issued 2026-08-31expires 2027-03-17

DNSSECinsecure

Domain is not signed with DNSSEC

. → org → dyndns.org

Email authenticationgood

SPF	pass `v=spf1 mx/24 a:lists.dyndns.com ip4:63.208.196.0/24 ptr:opensrs.net include:outbound.mailhop.org include:sendlabs.com include:dynect.net include:spf.protection.outlook.com ~all`
DMARC	pass policy reject
DKIM	none of 1 common selectors

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

Security scoregrade B · 145/205

Basic Security

10/40missing: DNSSEC Enabled, Nameserver Diversity

Record Security

30/45missing: CAA Records, DKIM Presence

Advanced Security

10/25missing: Mail Server Configuration, SOA Record Configuration, IPv6 Support

Domain Reputation

50/50

Threat Detection

45/45missing: Domain Age Check

Blocklists0 listings · 5 lookups

SURBL MultidomainURIBL MultidomainSpamCop138.1.125.45Barracuda138.1.125.45UCEPROTECT Level 1138.1.125.45

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=dyndns.org" \ -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=dyndns.org"

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

Watch dyndns.org. 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