21Shares
21shares.com
- Industry
- Financial services
- Headquarters
- Zürich, Zurich
- Type
- private
- Employees (approx.)
- 100
- Checked on
- 19 October 2026
64/100Grade C
Protection against forged senders: largely protected
Points per criterion
- MX 10 / 10
- SPF 15 / 15
- DKIM 20 / 20
- DMARC 19 / 25
- DNSSEC 0 / 10
- Transport (MTA-STS/DANE) 0 / 15
- TLS-RPT 0 / 5
- Industry avg.: 61.8 ▲ 2.2
- Canton avg.: 53 ▲ 11
- Overall avg.: 53.5 ▲ 10.5
- Rank 15 of 40 in the industry
Findings
-
!DNSSEC not enabled
Without DNSSEC, DNS answers can be forged in transit. DANE requires DNSSEC.
-
!No MTA-STS
Without MTA-STS (or DANE) inbound encryption is not enforced; an attacker on the path can downgrade to plain text.
-
!No TLS reporting (TLS-RPT)
Without TLS-RPT the organisation does not learn when senders fail to deliver encrypted.
Who runs the mail?
- Mailbox provider
- Google Workspace
- Upstream gateway
- Cloudflare Email Security
- Provider jurisdiction
- USA · MX: US
- Detection confidence
- 72 / 100
- Microsoft tenant
- Federated · 21.co
- Tenant region
- EU
- Federated via
amun.okta.com
Signals (5)
| Domain verification | Microsoft 365 | MS=ms69848941 |
|---|---|---|
| SPF | Google Workspace | include:_spf.google.com |
| DKIM | Google Workspace | google |
| Domain verification | Google Workspace | google-site-verification=W4FqtOA9H1lqaPh |
| Entra ID | Microsoft 365 | Entra-ID-Tenant (Federated) |
MX servers
| Pref | Host | IP | Network | Country | TLSA |
|---|---|---|---|---|---|
| 10 | mailstream-east.mxrecord.io | 172.65.213.128 | AS13335 CLOUDFLARENET - Cloudflare, Inc. | US | – |
| 10 | mailstream-west.mxrecord.io | 172.65.220.210 | AS13335 CLOUDFLARENET - Cloudflare, Inc. | US | – |
| 20 | mailstream-central.mxrecord.mx | 172.65.64.78 | AS13335 CLOUDFLARENET - Cloudflare, Inc. | US | – |
SPF
v=spf1 include:_spf.google.com include:143444220.spf01.hubspotemail.net include:5994002.spf01.hubspotemail.net -all- all
-all- DNS lookups
- 3 / 10
- Includes
_spf.google.com143444220.spf01.hubspotemail.net5994002.spf01.hubspotemail.net- Detected sending services
- Google, HubSpot
DMARC
v=DMARC1; p=quarantine; rua=mailto:07be4b411b57409195eea07035203f9d@dmarc-reports.cloudflare.net,mailto:dmarc@21shares.com- Policy
- p=quarantine
- Subdomains (sp)
- inherits p=quarantine
- Share (pct)
- 100 %
- Alignment DKIM/SPF
- relaxed / relaxed
- Aggregate reports (rua)
07be4b411b57409195eea07035203f9d@dmarc-reports.cloudflare.netdmarc@21shares.com- Report services
- Cloudflare
DKIM
| Selector | Key | delegated to |
|---|---|---|
google | RSA 2048 | – |
s1 | RSA 2048 | s1.domainkey.u53178964.wl215.sendgrid.net |
s2 | RSA 2048 | s2.domainkey.u53178964.wl215.sendgrid.net |
Checked: 100 common selectors. Keys under custom selectors remain invisible.
Transport encryption
- MTA-STS
- missing
- DANE
- missing
- DNSSEC
- missing
- TLS-RPT
- missing
- BIMI
- missing
Verified services
From verification records in the domain TXT: services where the domain is verified.
Microsoft 365GoogleAppleMeta/FacebookAtlassianZoomSlackHubSpotKnowBe4CanvaAirtable
History
- Score 64 · DMARC quarantine
Raw data
21shares.com. IN MX 10 mailstream-east.mxrecord.io.
21shares.com. IN MX 10 mailstream-west.mxrecord.io.
21shares.com. IN MX 20 mailstream-central.mxrecord.mx.
21shares.com. IN TXT "v=spf1 include:_spf.google.com include:143444220.spf01.hubspotemail.net include:5994002.spf01.hubspotemail.net -all"
_dmarc.21shares.com. IN TXT "v=DMARC1; p=quarantine; rua=mailto:07be4b411b57409195eea07035203f9d@dmarc-reports.cloudflare.net,mailto:dmarc@21shares.com"