Cisco lookalike domains
Greyphish has recorded 198 domains that resemble Cisco since February 2026, 42 of them in the last 90 days. They split between combosquats (56%) and typosquats (39%). .com carries 66% of them, out of 37 endings in all. The pace has picked up, with 21 in the last 30 days against 11 in the 30 before. 33 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
One or two keystrokes away from the real name: a letter dropped, doubled, swapped or mistyped. More
A letter swapped for one that looks the same, in ASCII or in Unicode written as punycode. More
Words most often added to the name in the last 90 days: service (5), secure (5), app (4).
Lookalikes per week
Show as a table
| Week of | Typo | Combo | Homoglyph | Total |
|---|---|---|---|---|
| 2026-04-20 | 3 | 3 | 1 | 7 |
| 2026-04-27 | 1 | 0 | 0 | 1 |
| 2026-05-04 | 2 | 1 | 0 | 3 |
| 2026-05-11 | 0 | 1 | 0 | 1 |
| 2026-05-18 | 0 | 4 | 1 | 5 |
| 2026-05-25 | 0 | 1 | 1 | 2 |
| 2026-06-01 | 1 | 1 | 0 | 2 |
| 2026-06-08 | 1 | 2 | 0 | 3 |
| 2026-06-15 | 1 | 4 | 0 | 5 |
| 2026-06-22 | 1 | 3 | 0 | 4 |
| 2026-06-29 | 4 | 2 | 0 | 6 |
| 2026-07-06 | 1 | 0 | 1 | 2 |
| 2026-07-13 | 2 | 3 | 0 | 5 |
| 2026-07-20 | 1 | 1 | 0 | 2 |
| 2026-07-27 | 0 | 1 | 0 | 1 |
| 2026-08-03 | 0 | 1 | 0 | 1 |
| 2026-08-10 | 1 | 3 | 0 | 4 |
| 2026-08-17 | 0 | 4 | 0 | 4 |
| 2026-08-24 | 1 | 1 | 0 | 2 |
| 2026-08-31 | 1 | 0 | 0 | 1 |
| 2026-09-07 | 1 | 2 | 0 | 3 |
| 2026-09-14 | 1 | 1 | 0 | 2 |
| 2026-09-21 | 1 | 0 | 0 | 1 |
| 2026-09-28 | 3 | 4 | 0 | 7 |
| 2026-10-05 | 0 | 8 | 0 | 8 |
| 2026-10-12 | 2 | 1 | 0 | 3 |
Endings
The 8 most used of the 37 top-level domains these lookalikes sit under.
| Ending | Lookalikes | Share |
|---|---|---|
| .com | 131 | 66.2% |
| .ru | 8 | 4.0% |
| .ir | 6 | 3.0% |
| .net | 5 | 2.5% |
| .de | 4 | 2.0% |
| .org | 4 | 2.0% |
| .co.uk | 3 | 1.5% |
| .mil.ph | 3 | 1.5% |
Where they are registered
For the 126 with a registrar in WHOIS (64% 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 | 30 | 23.8% | Retail |
| Cloudflare | 10 | 7.9% | Retail |
| Network Solutions | 10 | 7.9% | Retail |
| Global Domain Group | 6 | 4.8% | Retail |
| NameBright | 6 | 4.8% | Retail |
| Amazon | 5 | 4.0% | Retail |
| Gname | 4 | 3.2% | Retail |
| eNom | 4 | 3.2% | Retail |
What the live ones do
28 of these lookalikes were registered and checked for a website and mail: 16 (57%) served a website and 12 (43%) 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 11 live ones checked against it (0%).
11 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 Cisco; it is not necessarily malicious, and none of these is a claim about who registered it or why.
cisdo[.]comTypo, Oct 13Not checkedciscowebtools[.]comCombo, Oct 12Serves a websiteMX recordscixsco[.]comTypo, Oct 12Not checkedciscoservicesdynamics[.]comCombo, Oct 10Serves a websiteMX recordsciscosecureclient[.]vipCombo, Oct 9Not checkedciscosecureclient[.]comCombo, Oct 9Not checkedciscoweb[.]shopCombo, Oct 7Serves a websitecisco-online[.]com[.]cyCombo, Oct 6Serves a websiteMX recordsciscoservices[.]comCombo, Oct 6No site or mail when checkedciscowebservers[.]comCombo, Oct 5Serves a websiteMX records
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 Cisco. Domains listed resemble Cisco 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.