How is segment.io?

Looks fine risk 0/100

Registered 15 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 476 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

476 ms · ends at www.twilio.com

HTTPS

121 d

left on a Amazon certificate

Age

15 years

registered 2011-10-01

Blocklists

listings across 5 lists

Everything we looked at

DNS records4 record types

A	32.186.58.174 35.82.46.240 44.240.188.220
MX	0 smtp.google.com
NS	ns-404.awsdns-50.com ns-1606.awsdns-08.co.uk ns-1133.awsdns-13.org ns-656.awsdns-18.net
TXT	v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all google-site-verification=S5nyvUzivmby_7f7uBujrDqEnpWBXXlnrrqd2C9xnyA atlassian-domain-verification=ptYVHpaMsvO4rioYGuwW41t5ygZsFoyQxLpQOLI4jK80bjBw/S6eTpjZec1lCauF

RegistrationMarkMonitor Inc.

registrar	MarkMonitor Inc.
registered	2011-10-01
expires	2028-10-01
last changed	2026-09-04
owner	Twilio Inc.
nameservers	ns-1133.awsdns-13.org ns-656.awsdns-18.net ns-404.awsdns-50.com ns-1606.awsdns-08.co.uk
status	client delete prohibited client transfer prohibited client update prohibited

registered 2011-10-01expires 2028-10-01

HTTPS certificate121 days left

valid	yes
issuer	Amazon
covers	.segment.com, segment.com, segment.io, .segment.io
protocol	TLSv1.3

issued 2026-08-17expires 2027-03-02

DNSSECinsecure

Domain is not signed with DNSSEC

. → io → segment.io

Email authenticationexcellent

SPF	pass `v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all`
DMARC	pass policy reject
DKIM	found: google, smtp

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 · 11 lookups

SURBL MultidomainURIBL MultidomainSpamCop35.82.46.240Barracuda35.82.46.240UCEPROTECT Level 135.82.46.240SpamCop32.186.58.174Barracuda32.186.58.174UCEPROTECT Level 132.186.58.174SpamCop44.240.188.220Barracuda44.240.188.220UCEPROTECT Level 144.240.188.220

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=segment.io" \ -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=segment.io"

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

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

Watch segment.io. 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