Jar4

Jar4 is a temporary email provider

We have recorded 13 domain(s) routed through Jar4's mail servers. Of those, 13 (100%) are classified disposable. Addresses on these domains are created for one-off use and abandoned, which for SaaS products and mailing lists means fake signups, free-trial abuse and bounces later.

Domains
13
Disposable
13
MX hosts
1
MX IPs
1
Last seen
Aug 6, 2026

Associated domains

13 domain(s), newest first.

Domain Added Classification
5sword.com Jul 29, 2026 Disposable
mom2kid.com Jul 29, 2026 Disposable
cytsl.com Jul 29, 2026 Disposable
6mails.com Jul 29, 2026 Disposable
xmlrhands.com Aug 6, 2026 Disposable
fundedfgq.com Aug 6, 2026 Disposable
abovsr.cn Aug 6, 2026 Disposable
jrs77.com Aug 4, 2026 Disposable
lowdh.com Jul 31, 2026 Disposable
mail35.net Jul 29, 2026 Disposable
faxapdf.com Jul 29, 2026 Disposable
remail7.com Jul 29, 2026 Disposable
trysubj.com Jul 29, 2026 Disposable

Infrastructure

Identified by
jar4.cn
MX hostnames
mail.jar4.cn
IPv4
43.155.206.230
IPv6
None captured.

Check a domain

See whether any domain is disposable, forwarding or safe.

Enter a domain to check it against our database

Checking the domain against the disposable corpus…

What this check returns
Whether the domain is a known throwaway provider
The mail host it runs on
How the address classifies: company, personal, role, university
Domain age, where we have it
Upgrade

Ready to validate at scale?

Blocking one provider is whack-a-mole — operators spin up new domains daily. The API scores every signup against the whole catalogue as it grows.

Create free account No credit card · 25 free checks every day

What you unlock

  • Real-time signup scoring via API
  • New throwaway domains caught as they appear
  • Bulk list cleaning and enrichment