Firewalls help protect your network by deciding what traffic gets in or out. They can block everything, allow everything, or filter based on specific rules—like port, location, domain, or IP.

To keep WeTransfer running smoothly, your firewall needs to allow traffic to and from certain domains and protocols. That usually means adding them to your allowlist and ensuring the right ports are open.

Check your firewall's setup guide for the exact steps—it's a quick fix!

Protocols and ports

WeTransfer uses HTTPS (port 443) for secure communication and QUIC protocol for faster, more efficient transfers. QUIC is the transport layer for HTTP/3 and runs over UDP, which means your firewall should allow both TCP traffic on port 443 and UDP traffic on port 443. This combination gives you the security of encrypted connections with the speed benefits of modern web protocols.

Domains and hostnames

To keep WeTransfer and all its features working smoothly, make sure these domains and hostnames are on your firewall's allowlist. We'll let you know if anything changes via product updates, but it's a good idea to check this page now and then—or follow the section to stay in the loop.

WeTransfer.com

wetransfer.com
www.wetransfer.com
analytics-v2.wetransfer.com
cdn.wetransfer.com
donny.wetransfer.com
experiments.wetransfer.com
help.wetransfer.com
lebowski.wetransfer.com
privacy.wetransfer.com
snowplow.wetransfer.com
tagging.wetransfer.com
auth.wetransfer.com
portals.wetransfer.com

WeTransfer.net

backgrounds.wetransfer.net
bsp-proxy.wetransfer.net
ekstrom.wetransfer.net
eu-west-1-files.wetransfer.net
helios-assets.wetransfer.net
local-bartender-dd-proxy.wetransfer.net
nb-eu-west-1-files.wetransfer.net
nb-us-east-1-files.wetransfer.net
nolan.wetransfer.net
spaceship-eu-west-1-files.wetransfer.net
storm-eu-west-1.wetransfer.net
storm-eu-west-1-files.wetransfer.net
storm-us-east-1.wetransfer.net
storm-us-east-1-files.wetransfer.net
tempest-eu-west-1.wetransfer.net
tempest-us-east-1.wetransfer.net

We.tl

we.tl

Amazon S3

wt-prod-euwest1-storm.s3.amazonaws.com
wt-prod-useast1-storm.s3.amazonaws.com
wt-prod-euwest1-storm.s3.eu-west-1.amazonaws.com
wt-prod-useast1-storm.s3.us-east-1.amazonaws.com
wt-prod-euwest1-storm.s3-accelerate.amazonaws.com
wt-prod-useast1-storm.s3-accelerate.amazonaws.com
wt-prod-euwest1-storm.s3-accelerate.eu-west-1.amazonaws.com
wt-prod-useast1-storm.s3-accelerate.us-east-1.amazonaws.com

Observability

datadoghq-browser-agent.com
www.datadoghq-browser-agent.com

Backgrounds

cdn.brandmetrics.com
cdn.lamp.avct.cloud
collector.brandmetrics.com
e-10220.adzerk.net
measure.lamp.avct.cloud
dt.adsafeprotected.com
pixel.adsafeprotected.com
static.adsafeprotected.com
ad.doubleclick.net
googleads.g.doubleclick.net

Analytics

adservice.google.com
apps.rokt.com
ara.paa-reporting-advertising.amazon
bat.bing.com
bat.bing.net
c.amazon-adsystem.com
cdn.jsdelivr.net
connect.facebook.net
ct.pinterest.com
di.rlcdn.com
insight.adsrvr.org
js.adsrvr.org
pagead2.googlesyndication.com
public.profitwell.com
s.amazon-adsystem.com
s.pinimg.com
www.facebook.com
www.google.com
www.google.it
www2.profitwell.com