Router Tech Support +1-877-223-5208

These guys claim to be “router tech support”.

Number: +1-877-223-5208

Website: https://routertechsupport.net/

Some more info:
Domain Name: ROUTERTECHSUPPORT.NET
Registry Domain ID: 2149703902_DOMAIN_NET-VRSN
Registrar WHOIS Server: Whois.bigrock.com
Registrar URL: www.bigrock.com
Updated Date: 2018-08-04T10:08:19Z
Creation Date: 2017-08-03T15:17:47Z
Registrar Registration Expiration Date: 2019-08-03T15:17:47Z
Registrar: BigRock Solutions Ltd
Registrar IANA ID: 1495
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: Domain Admin
Registrant Organization: Privacy Protect, LLC (PrivacyProtect.org)
Registrant Street: 10 Corporate Drive

Registrant City: Burlington
Registrant State/Province: MA
Registrant Postal Code: 01803
Registrant Country: US
Registrant Phone: +1.8022274003
Registrant Phone Ext:
Registrant Fax:
Registrant Fax Ext:
Registrant Email: [email protected]
Registry Admin ID: Not Available From Registry
Admin Name: Domain Admin
Admin Organization: Privacy Protect, LLC (PrivacyProtect.org)
Admin Street: 10 Corporate Drive

Admin City: Burlington
Admin State/Province: MA
Admin Postal Code: 01803
Admin Country: US
Admin Phone: +1.8022274003

https://phone.firertc.com/calls/5b840e5a74756375242e0000/recording

Still works.