Nasa screenshot narin po ang answer: connected kayo sa Globe servers(Globe Telecom, Clark City), common na walang throttling kapag *.speedtest.net kasi may sariling Ookla speedtest servers si Globe (same kay Smart, may sarili din silang Ookla servers), automatic ma-seselect si Globe jan dahil si Ookla pipili automatically ng pinakamalapit na server sa area mo by default, and nasa loob ng infrastructure ni Globe ang Ookla speedtest server nila so make sense bakit ganon ang result.
To prove my point: try again, but this time manually select speedtest server.. yes pwede yan, click mo lang yung Change Server try mo humanap na hindi under lease ng Globe Telecom.
Either business tactic or physical capacity ng ISP ang reason bakit may ganyan silang filter sa network level