Heroku lookalike domains
Greyphish has recorded 45 domains that resemble Heroku since February 2026, 7 of them in the last 90 days. Most of them (64%) are typosquats, a keystroke or two away from the real name. .com carries 82% of them, out of 8 endings in all. 4 certificates for unregistered .com.ph, .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 | Total |
|---|---|---|---|
| 2026-04-20 | 1 | 0 | 1 |
| 2026-04-27 | 0 | 0 | 0 |
| 2026-05-04 | 0 | 0 | 0 |
| 2026-05-11 | 0 | 2 | 2 |
| 2026-05-18 | 0 | 0 | 0 |
| 2026-05-25 | 0 | 0 | 0 |
| 2026-06-01 | 1 | 0 | 1 |
| 2026-06-08 | 0 | 0 | 0 |
| 2026-06-15 | 0 | 2 | 2 |
| 2026-06-22 | 2 | 0 | 2 |
| 2026-06-29 | 0 | 0 | 0 |
| 2026-07-06 | 1 | 0 | 1 |
| 2026-07-13 | 1 | 0 | 1 |
| 2026-07-20 | 0 | 0 | 0 |
| 2026-07-27 | 0 | 0 | 0 |
| 2026-08-03 | 0 | 0 | 0 |
| 2026-08-10 | 3 | 0 | 3 |
| 2026-08-17 | 0 | 0 | 0 |
| 2026-08-24 | 0 | 0 | 0 |
| 2026-08-31 | 0 | 0 | 0 |
| 2026-09-07 | 0 | 0 | 0 |
| 2026-09-14 | 0 | 0 | 0 |
| 2026-09-21 | 0 | 0 | 0 |
| 2026-09-28 | 1 | 2 | 3 |
| 2026-10-05 | 0 | 1 | 1 |
| 2026-10-12 | 0 | 0 | 0 |
Endings
The 8 most used of the 8 top-level domains these lookalikes sit under.
| Ending | Lookalikes | Share |
|---|---|---|
| .com | 37 | 82.2% |
| .work | 2 | 4.4% |
| .ai | 1 | 2.2% |
| .co | 1 | 2.2% |
| .de | 1 | 2.2% |
| .my.id | 1 | 2.2% |
| .ru | 1 | 2.2% |
| .xyz | 1 | 2.2% |
Where they are registered
For the 34 with a registrar in WHOIS (76% 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 |
|---|---|---|---|
| NameBright | 5 | 14.7% | Retail |
| GoDaddy | 4 | 11.8% | Retail |
| Namecheap | 4 | 11.8% | Retail |
| MarkMonitor | 3 | 8.8% | Brand protection |
| Cloudflare | 2 | 5.9% | Retail |
| Dynadot | 2 | 5.9% | Retail |
| GMO Internet Group | 2 | 5.9% | Retail |
| 123-Reg | 1 | 2.9% | 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 Heroku; it is not necessarily malicious, and none of these is a claim about who registered it or why.
herokuapps[.]aiCombo, Oct 7No site or mail when checkedheriku[.]comTypo, Sep 29Not checkedheroku-app-sf[.]comCombo, Sep 28Not checkedyeroku[.]comTypo, Aug 12Not checkedhuroku[.]comTypo, Aug 11Not checkedhreoku[.]comTypo, Aug 10Not checkedheroka[.]comTypo, Jul 16Not checkedharoku[.]comTypo, Jul 8Not checkedzeroku[.]comTypo, Jun 24Not checkedherokuapp[.]my[.]idCombo, Jun 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 developer tools
Greyphish is not affiliated with Heroku. Domains listed resemble Heroku 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.