many years ago I used this script to extract the BGP names from HE.com I dont know if it works or not.

extractor.py

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import time

class He:
    def __init__(self, url="https://bgp.he.net"):
        self.url = url

    # Open headless chromedriver
    def start_driver(self):
        PROXY="socks5://127.0.0.1:1188"
        # chrome options
        options = webdriver.ChromeOptions()
        options.add_argument("--headless")
        options.add_argument("--window-size=1920,1080")
        # options.add_argument("--proxy-server=%s" % PROXY)
        options.add_argument("--user-agent=Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:69.0) Gecko/20100101 Firefox/69.0")
        # initiate browser
        print("Starting Chrome Webdriver")
        self.driver = webdriver.Chrome(options=options)
        time.sleep(2)

	# Close chromedriver
    def stop_driver(self):
        print("Stopping Chrome Webdriver")
        self.driver.quit()

    def get(self, as_name=None):
        print("Getting {}/{}".format(self.url, as_name))
        #self.driver.add_cookie({'name' : '_bgp_session', 'value' : 'BAh7BjoPc2Vzc2lvbl9pZEkiJTJmZGY5ODA4OTM1OGFiMmI1YzQwMTRmZmNjMzM1OGM2BjoGRUY%3D--3d56fcb35272524eb97e1b8913cbcfcbe5f56903'})
        self.driver.get("{}/{}".format(self.url, as_name))
        time.sleep(5)
        links = self.driver.find_elements_by_xpath("/html/body/div[2]/div[@id='prefixes']/table/tbody/tr/td/a")
        # links = self.driver.find_elements_by_tag_name('a')
        ip_list = []
        for i in links:
            try:
                ip =  i.get_attribute('href')
                if '/net/' in ip:
                    ip_list.append(ip.replace("https://bgp.he.net/net/",""))
            except:
                print('ignoring URL')
        print(f"ip_list = {ip_list}")
        return ip_list

he = He()
as_list = [
'AS49666 ',
'AS42440']
he.start_driver()
for as_name in as_list:
    he.get(as_name)