MasterClass lookalike domains
Greyphish has recorded 90 domains that resemble MasterClass since February 2026, 10 of them in the last 90 days. They split between combosquats (53%) and typosquats (42%). .com carries 63% of them, out of 24 endings in all. 2 certificates for unregistered .ph names (registry wildcard) are excluded: the registry answers for any name under that ending, 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 | 2 | 2 | 0 | 4 |
| 2026-04-27 | 2 | 0 | 0 | 2 |
| 2026-05-04 | 0 | 0 | 0 | 0 |
| 2026-05-11 | 1 | 2 | 1 | 4 |
| 2026-05-18 | 0 | 0 | 0 | 0 |
| 2026-05-25 | 2 | 1 | 0 | 3 |
| 2026-06-01 | 0 | 0 | 0 | 0 |
| 2026-06-08 | 0 | 0 | 0 | 0 |
| 2026-06-15 | 0 | 1 | 0 | 1 |
| 2026-06-22 | 1 | 1 | 1 | 3 |
| 2026-06-29 | 0 | 1 | 0 | 1 |
| 2026-07-06 | 1 | 0 | 0 | 1 |
| 2026-07-13 | 0 | 0 | 0 | 0 |
| 2026-07-20 | 1 | 0 | 0 | 1 |
| 2026-07-27 | 0 | 0 | 0 | 0 |
| 2026-08-03 | 0 | 1 | 0 | 1 |
| 2026-08-10 | 0 | 0 | 1 | 1 |
| 2026-08-17 | 1 | 1 | 0 | 2 |
| 2026-08-24 | 0 | 0 | 0 | 0 |
| 2026-08-31 | 1 | 0 | 0 | 1 |
| 2026-09-07 | 0 | 0 | 0 | 0 |
| 2026-09-14 | 0 | 0 | 0 | 0 |
| 2026-09-21 | 0 | 1 | 0 | 1 |
| 2026-09-28 | 0 | 1 | 0 | 1 |
| 2026-10-05 | 0 | 2 | 0 | 2 |
| 2026-10-12 | 0 | 0 | 0 | 0 |
Endings
The 8 most used of the 24 top-level domains these lookalikes sit under.
| Ending | Lookalikes | Share |
|---|---|---|
| .com | 57 | 63.3% |
| .online | 4 | 4.4% |
| .de | 3 | 3.3% |
| .ru | 3 | 3.3% |
| .co.za | 2 | 2.2% |
| .info | 2 | 2.2% |
| .site | 2 | 2.2% |
| .ai | 1 | 1.1% |
Where they are registered
For the 55 with a registrar in WHOIS (61% 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 | 15 | 27.3% | Retail |
| Namecheap | 6 | 10.9% | Retail |
| NameBright | 4 | 7.3% | Retail |
| Alibaba Cloud | 3 | 5.5% | Retail |
| Spaceship | 3 | 5.5% | Retail |
| Above.com | 2 | 3.6% | Retail |
| Dynadot | 2 | 3.6% | Retail |
| Hostinger | 2 | 3.6% | Retail |
What the live ones do
11 of these lookalikes were registered and checked for a website and mail: 6 (55%) served a website and 6 (55%) publish MX records, so they can receive email. Checks run on the higher-severity matches that resolve, not on every lookalike.
Google Web Risk lists none of the 2 live ones checked against it.
2 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 MasterClass; it is not necessarily malicious, and none of these is a claim about who registered it or why.
masterclassportal[.]onlineCombo, Oct 11No site or mail when checkedonline-business-masterclass[.]comCombo, Oct 10Serves a websiteMX recordsmymasterclass[.]co[.]zaCombo, Sep 30Not checkedmymasterclass[.]inCombo, Sep 21Not checkedlasterclass[.]comTypo, Sep 6Not checkedjmasterclass[.]comTypo, Aug 22Not checkedmasterclassofficial[.]onlineCombo, Aug 20Not checkedrnasterclass[.]comHomoglyph, Aug 15Not checkedmasterclassportal[.]comCombo, Aug 3Not checkedmasterklass[.]comTypo, Jul 21Not checked
Or watch it free: Greyphish tells you when a new lookalike of your domain is registered or goes live.
Further reading
More in education
Greyphish is not affiliated with MasterClass. Domains listed resemble MasterClass 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.