How is split.io?

Looks fine risk 0/100

Registered 12 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 238 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

238 ms · ends at www.split.io

HTTPS

78 d

left on a Let's Encrypt certificate

Age

12 years

registered 2015-03-17

Blocklists

listings across 5 lists

Everything we looked at

DNS records5 record types

A	198.202.211.1
MX	10 alt3.aspmx.l.google.com 10 alt4.aspmx.l.google.com 1 aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com
NS	ns-877.awsdns-45.net ns-1183.awsdns-19.org ns-1842.awsdns-38.co.uk ns-335.awsdns-41.com
TXT	calendly-site-verification=6aI8Ge6m4H2CiOlkmk4hXcmt2yRuIignTPXA0moWA airtable-verification=0fcab18bdc80e27e22a5549940856b30 docusign=9cf5c10a-fbc1-4998-96a1-48041624fa9c v=spf1 include:_spf.google.com include:stspg-customer.com include:spf.mandrillapp.com include:mktomail.com include:us._netblocks.mimecast.com -all v=zoomadn us.zoom.idp.commercial=split.okta.com miro-verification=76692e6e01f3df4899ec315d00829e1c2adc75d7 status-page-domain-verification=t5t853dqw02d slack-domain-verification=oEpbXlA1eOsQik2EBXaPWG4We4LWpetnTXROwEyy MS=ms12528989 google-site-verification=SBAx_4U_bx54nBevi47Egcr3XtVTbwO5_TuPUeMU6Hg atlassian-domain-verification=ukJ2D5JHPfIj1BIWN3SB/jqHH/KlquIM58WPpJLB9hD1KEhp/XXoxU1oOs8d2So/ mongodb-site-verification=k01K9YKEIW8X4F60JO4ErFKfCcgZqH0R
CAA	{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0} {'type': 'CAA', 'issue': 'amazonaws.com', 'critical': 0} {'type': 'CAA', 'issue': 'amazontrust.com', 'critical': 0} {'type': 'CAA', 'issue': 'amazon.com', 'critical': 0} {'type': 'CAA', 'iodef': 'mailto:infra@split.io', 'critical': 0} {'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0} {'type': 'CAA', 'issue': 'awstrust.com', 'critical': 0} {'type': 'CAA', 'issue': 'globalsign.com', 'critical': 0} {'type': 'CAA', 'issue': 'aws.amazon.com', 'critical': 0}

RegistrationGandi SAS

registrar	Gandi SAS
registered	2015-03-17
expires	2027-03-17
last changed	2026-08-12
owner	Harness Inc.
nameservers	ns-1183.awsdns-19.org ns-877.awsdns-45.net ns-1842.awsdns-38.co.uk ns-335.awsdns-41.com
status	client transfer prohibited

registered 2015-03-17expires 2027-03-17

HTTPS certificate78 days left

valid	yes
issuer	Let's Encrypt
covers	split.io
protocol	TLSv1.3

issued 2026-10-18expires 2027-01-16

DNSSECsecure

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

. → io → split.io

Email authenticationexcellent

SPF	pass `v=spf1 include:_spf.google.com include:stspg-customer.com include:spf.mandrillapp.com include:mktomail.com include:us._netblocks.mimecast.com -all`
DMARC	pass policy quarantine
DKIM	found: google, s1, s2

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

Security scoregrade A · 180/205

Basic Security

20/40missing: DNSSEC Enabled

Record Security

45/45missing: DKIM Presence

Advanced Security

20/25missing: 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=split.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=split.io"

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

Watch split.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