B2B contacts in IT System Custom Software Development
RampedUp holds 133,353 professional profiles for IT System Custom Software Development as of the build — 0.0% of all profiles carrying an industry, and 0.0% of the global file. Of those, 60,619 carry a professional email address and 9,865 carry a mobile number. Ranked #154 of 413 industries.
What this industry covers
This industry includes entities that focus on creating, modifying, testing, and supporting software to meet the needs of a particular customer.
How this slice behaves. Professional email sits on 45.5% of IT System Custom Software Development records, in line with the 52.7% average across all classified industries. Mobile numbers sit on 7.4%, below the 12.4% industry average — worth knowing before you plan the channel mix.
What the records carry
Field coverage for IT System Custom Software Development, counted from the August 2026 build. The global column is there so you can see whether this slice runs above or below the file as a whole.
| Field on the record | IT System Custom Software Development records | Share of IT System Custom Software Development | Global share |
|---|---|---|---|
| Professional email | 60,619 | 45.5% | 18.9% |
| Personal email | 17,622 | 13.2% | 13.3% |
| Phone (any) | 92,155 | 69.1% | 34.9% |
| Mobile number | 9,865 | 7.4% | 7.4% |
| Primary contact record | 106,477 | 79.8% | 32.4% |
| All five present on one record | 2,599 | 1.9% | 1.5% |
Go deeper in the Count Explorer
Everything above is an exact count for IT System Custom Software Development on its own. To put IT System Custom Software Development together with a second filter — a title level, a job function, a company size band, a revenue band — open it in the Count Explorer. It arrives with IT System Custom Software Development already selected, and it tells you on every answer whether the number is exact or an estimate.
- IT System Custom Software Development with a mobile number9,865
- IT System Custom Software Development with a professional email address60,619
- IT System Custom Software Development with all five fields present2,599
Why a second filter changes the answer. The August 2026 cube holds one dimension at a time, so a count for IT System Custom Software Development on its own is read straight out of it and is exact. Combine IT System Custom Software Development with a second dimension and the cube has no such cell — the explorer estimates it, shows the ceiling it cannot exceed, and labels it an estimate rather than passing it off as a measured number.
Comparable industries
The industries ranked either side of IT System Custom Software Development by profile count.
| # | Industry | Profiles | Professional email | Mobile |
|---|---|---|---|---|
| 152 | Railroad Equipment Manufacturing | 135,258 | 71,961 | 11,304 |
| 153 | Think Tanks | 134,219 | 57,209 | 14,917 |
| 155 | Electric Power Transmission, Control, and Distribution | 132,859 | 66,376 | 7,336 |
| 156 | Tobacco Manufacturing | 121,916 | 33,361 | 4,217 |
Questions about this slice
What does the IT System Custom Software Development industry include?
This industry includes entities that focus on creating, modifying, testing, and supporting software to meet the needs of a particular customer.
How many IT System Custom Software Development contacts does RampedUp have?
RampedUp holds 133,353 professional profiles for IT System Custom Software Development as of the August 2026 build, which is 0.0% of all profiles carrying an industry and 0.0% of the global file of 895,093,624.
How many IT System Custom Software Development contacts have an email address?
60,619 carry a professional email address (45.5% of IT System Custom Software Development records) and 17,622 carry a personal email address (13.2%).
How many IT System Custom Software Development contacts have a phone number?
92,155 carry a phone number of some kind (69.1%), of which 9,865 are mobile numbers (7.4% of IT System Custom Software Development records).
Need this cross-filtered?
These are exact counts for IT System Custom Software Development on its own. For IT System Custom Software Development combined with a title level, a company size or a required field, use the explorer — or ask and we will run it against the live file.