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Jonathan Halliday Email & Phone Number
Carrier Switching
at
COLT Telecom
1 work email found
@colt.net
LinkedIn matched
✓ Verified August 2026
4 data sources
Profile completeness 100%
Current company
Role
Carrier Switching
Location
London, England, United Kingdom
Company size
Who is Jonathan Halliday? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Jonathan Halliday is listed as Carrier Switching at COLT Telecom, a with 4519 employees, based in London, England, United Kingdom. AeroLeads shows a work email signal at colt.net and a matched LinkedIn profile for Jonathan Halliday.
Jonathan Halliday previously worked as Senior Voice Engineer at Colt Telecommunication and Switch data at Colt Telecommunication. Jonathan Halliday holds Electrical, Electronic And Communications Engineering Technology/Technician from University Of Sussex.
Company email context
Email format at COLT Telecom
This section adds company-level context without repeating Jonathan Halliday's masked contact details.
{first}.{last}@colt.net
89% confidence
AeroLeads found 1 current-domain work email signal for Jonathan Halliday. Compare company email patterns before reaching out.
Profile bio
About Jonathan Halliday
Voice engineer for 25 years with expertease in both TDM and VoIP. A passion for logic, common sense, socialising and sport.
Listed skills include Dna and Network Engineer.
Current workplace
Jonathan Halliday's current company
Company context helps verify the profile and gives searchers a useful next step.
Colt Telecom
8 roles
Jonathan Halliday work experience
A career timeline built from the work history available for this profile.
Senior Voice Engineer
Colt Telecommunication
Switch Data
Colt Telecommunication
Dec 1999 - Jan 2013
Contractor
May 1999 - Nov 1999
Contractor
Viatel Comercial
Feb 1999 - May 1999
Contractor (Switching)
Worldcom
Sep 1998 - Feb 1999
Contractor Switching Engineer
Worldcom
Jan 1998 - Jul 1998
Switch Datafil
Telewest
Jun 1995 - Nov 1997
Team & coworkers
Colleagues at COLT Telecom
Other employees you can reach at colt.net. View company contacts for 4519 employees →
MP
Marius Picu
Colleague at Colt TelecomGreater Reading Area, United Kingdom
View →
DM
Dheeraj Madan
Colleague at Colt TelecomGurgaon, Haryana, India
View →
SK
Sharmistha Kulshrestha
Colleague at Colt TelecomBengaluru, Karnataka, India
View →
MR
Manas Ranjan Behera
Colleague at Colt TelecomBengaluru, Karnataka, India
View →
DM
Danilo Milioni
Colleague at Colt TelecomRome, Latium, Italy
View →
FS
Florian Stumpf
Colleague at Colt TelecomSeevetal, Lower Saxony, Germany
View →
DV
Deepanjali Verma
Colleague at Colt TelecomNoida, Uttar Pradesh, India
View →
LG
Lloyd Gardner
Colleague at Colt TelecomGreater Barcelona Metropolitan Area, Spain
View →
AB
Agnieszka Bobryk
Colleague at Colt TelecomPoznan Metropolitan Area, Poland
View →
DC
Dal Cortile Giorgio
Colleague at Colt TelecomTurin, Piedmont, Italy
View →
Marius Picu
Colleague at Colt TelecomGreater Reading Area, United Kingdom
View →
DM
Dheeraj Madan
Colleague at Colt TelecomGurgaon, Haryana, India
View →
SK
Sharmistha Kulshrestha
Colleague at Colt TelecomBengaluru, Karnataka, India
View →
MR
Manas Ranjan Behera
Colleague at Colt TelecomBengaluru, Karnataka, India
View →
DM
Danilo Milioni
Colleague at Colt TelecomRome, Latium, Italy
View →
FS
Florian Stumpf
Colleague at Colt TelecomSeevetal, Lower Saxony, Germany
View →
DV
Deepanjali Verma
Colleague at Colt TelecomNoida, Uttar Pradesh, India
View →
LG
Lloyd Gardner
Colleague at Colt TelecomGreater Barcelona Metropolitan Area, Spain
View →
AB
Agnieszka Bobryk
Colleague at Colt TelecomPoznan Metropolitan Area, Poland
View →
DC
Dal Cortile Giorgio
Colleague at Colt TelecomTurin, Piedmont, Italy
View →
1 education record
Jonathan Halliday education
FAQ
Frequently asked questions about Jonathan Halliday
Quick answers generated from the profile data available on this page.
What company does Jonathan Halliday work for?
Jonathan Halliday works for COLT Telecom.
What is Jonathan Halliday's role at COLT Telecom?
Jonathan Halliday is listed as Carrier Switching at COLT Telecom.
What is Jonathan Halliday's email address?
AeroLeads has found 1 work email signal at @colt.net for Jonathan Halliday at COLT Telecom.
Where is Jonathan Halliday based?
Jonathan Halliday is based in London, England, United Kingdom while working with COLT Telecom.
What companies has Jonathan Halliday worked for?
Jonathan Halliday has worked for Colt Telecom, Colt Telecommunication, Colt Technology Services, Viatel Comercial, and Worldcom.
Who are Jonathan Halliday's colleagues at COLT Telecom?
Jonathan Halliday's colleagues at COLT Telecom include Marius Picu, Dheeraj Madan, Sharmistha Kulshrestha, Manas Ranjan Behera, and Danilo Milioni.
How can I contact Jonathan Halliday?
You can use AeroLeads to view verified contact signals for Jonathan Halliday at COLT Telecom, including work email, phone, and LinkedIn data when available.
What schools did Jonathan Halliday attend?
Jonathan Halliday holds Electrical, Electronic And Communications Engineering Technology/Technician from University Of Sussex.
What skills is Jonathan Halliday known for?
Jonathan Halliday is listed with skills including Dna and Network Engineer.
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