Sparc’s 449.975 repeater is connected to IRLP. To connect our UHF repeater to another repeater, find a node number, key the PTT and punch in the digits. Listen for the IRLP repeater on the other side to identify that the link is up. From there give out your call and see who answers.
Our node number is 8537, members out of town can use this number to connect in to the repeater to check into the net.
A good list to start with is the node summary by Country.
Another way is to use a phone app. Here is one for Android.
And here is one for IOS.
Some notable numbers to try are
8838 KC4AAC Palmer Station Antarctica
6050 VK2RCZ Sydney Austrailia
8522 VP9RSB Bermuda
6900 ZL3CAR Christchurch NZ
7767 9Z4FZ Trinidad and Tobago
6969 KF2GV Armenia
8144 ZS1JEN Cape Town South Africa
9070 REF9070 Alaska Reflector