jira api work if from home pc, but not on company pc (of specific country, regardless vpn or no)

[John Sheng]

I use postman to test api:

1) this one is always work (in home pc, in company pc with or without vpn). I use this as example that postman and api call is working from my pc (home or work) generally.

curl -k -o zephyrscale.txt --location -H "Authorization:Bearer xyz" --request GET https://api.zephyrscale.smartbear.com/v2/testcases/test-T1/testscript

 2)this one work in home pc, but not in company pc (in vpn or without vpn)

curl -k -o jira.txt --location -H "Authorization:Basic xyz" --request GET https://xxx.atlassian.net/rest/api/3/search?jql=key=w-18
Note1: for the Authorization, I go to https://id.atlassian.com/manage-profile/security/api-tokens -> create api token, then create base64 (of my_company_email:token).

Note2: the response from command line:
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 104 0 104 0 0 130 0 --:--:-- --:--:-- --:--:-- 130

Note3: the output file show this error:
{"errorMessages":["Issue does not exist or you do not have permission to see it."],"warningMessages":[]}

Note4: I asked coworker who are in the same country as me, he get same error. I then ask another cowkrer who are in other country, it actually work.

Note5: 1st api call use Bearer token. I am not sure if it play an role here.

The above observation suggest I have permission to access jira. but something unique to my company pc (of specific country) combined with something else cause the permission issue. 

Any insight?