Slack lookalike domains
Greyphish has recorded 127 domains that resemble Slack since February 2026, 22 of them in the last 90 days. They split between typosquats (57%) and combosquats (40%). .com carries 83% of them, out of 13 endings in all. The pace has slowed, with 4 in the last 30 days against 6 in the 30 before. 393 certificates for unregistered .ph, .com.ph, .net.ph names (registry wildcard) are excluded: the registry answers for any name under those endings, so nobody had to register one to get a certificate for it.
Data as of . Public sources only.
What kind of lookalikes
Lookalikes per week
Show as a table
| Week of | Typo | Combo | Homoglyph | Total |
|---|---|---|---|---|
| 2026-04-20 | 5 | 2 | 2 | 9 |
| 2026-04-27 | 1 | 2 | 0 | 3 |
| 2026-05-04 | 2 | 1 | 0 | 3 |
| 2026-05-11 | 2 | 2 | 0 | 4 |
| 2026-05-18 | 1 | 1 | 0 | 2 |
| 2026-05-25 | 1 | 1 | 0 | 2 |
| 2026-06-01 | 0 | 1 | 0 | 1 |
| 2026-06-08 | 0 | 1 | 0 | 1 |
| 2026-06-15 | 2 | 1 | 0 | 3 |
| 2026-06-22 | 3 | 1 | 0 | 4 |
| 2026-06-29 | 5 | 1 | 0 | 6 |
| 2026-07-06 | 1 | 2 | 0 | 3 |
| 2026-07-13 | 1 | 0 | 0 | 1 |
| 2026-07-20 | 3 | 1 | 0 | 4 |
| 2026-07-27 | 1 | 0 | 0 | 1 |
| 2026-08-03 | 0 | 1 | 0 | 1 |
| 2026-08-10 | 4 | 3 | 0 | 7 |
| 2026-08-17 | 0 | 0 | 0 | 0 |
| 2026-08-24 | 1 | 0 | 0 | 1 |
| 2026-08-31 | 1 | 1 | 0 | 2 |
| 2026-09-07 | 0 | 1 | 0 | 1 |
| 2026-09-14 | 0 | 0 | 0 | 0 |
| 2026-09-21 | 1 | 1 | 0 | 2 |
| 2026-09-28 | 1 | 0 | 0 | 1 |
| 2026-10-05 | 0 | 1 | 0 | 1 |
| 2026-10-12 | 0 | 0 | 0 | 0 |
Endings
The 8 most used of the 13 top-level domains these lookalikes sit under.
| Ending | Lookalikes | Share |
|---|---|---|
| .com | 106 | 83.5% |
| .org | 5 | 3.9% |
| .net | 3 | 2.4% |
| .online | 3 | 2.4% |
| .cfd | 2 | 1.6% |
| .ca | 1 | 0.8% |
| .casa | 1 | 0.8% |
| .cloud | 1 | 0.8% |
Where they are registered
For the 98 with a registrar in WHOIS (77% of all). Brand-protection registrars mostly hold defensive registrations made by brands themselves, so a domain there is more likely the brand's own than an imitation.
| Registrar | Lookalikes | Share | Type |
|---|---|---|---|
| GoDaddy | 23 | 23.5% | Retail |
| Amazon | 7 | 7.1% | Retail |
| NameBright | 7 | 7.1% | Retail |
| Namecheap | 7 | 7.1% | Retail |
| Cloudflare | 5 | 5.1% | Retail |
| Network Solutions | 4 | 4.1% | Retail |
| Dynadot | 3 | 3.1% | Retail |
| NameSilo | 3 | 3.1% | Retail |
What the live ones do
Google Web Risk lists none of the 1 live ones checked against it.
1 were tracked while live and 0 have since gone down. See what to do about a lookalike.
Recent examples
The 10 most recent, written with [.] so they cannot be clicked. The brand's own domains and registrations held by brand-protection registrars are left out. A lookalike resembles Slack; it is not necessarily malicious, and none of these is a claim about who registered it or why.
slackhelp[.]meCombo, Oct 10Not checkedslaxk[.]comTypo, Oct 4Not checkedsl-ack[.]comCombo, Sep 24Serves a websiteMX recordselack[.]comTypo, Sep 24Not checkedslack-app-lichess[.]orgCombo, Sep 11Not checkedslack-alert[.]comCombo, Sep 3Not checkedslackcom[.]comTypo, Sep 1Not checkedslacj[.]comTypo, Aug 29Not checkedportal-slack[.]onlineCombo, Aug 16Not checkedonline-slack[.]siteCombo, Aug 15Not checked
Or watch it free: Greyphish tells you when a new lookalike of your domain is registered or goes live.
Further reading
More in productivity
Greyphish is not affiliated with Slack. Domains listed resemble Slack by spelling; registration alone says nothing about intent. Counts cover domains first seen in public Certificate Transparency logs and ICANN zone files; domains that Greyphish customers watch are excluded.