Hey there primecoin!
I forked the peercoin seeder project to make a primecoin seeder: https://github.com/belovachap/primecoin-seeder
Should be able to make DNS requests to [tt]seed-sanfrancisco.primecoin.me[/tt] as in:
dig seed-sanfrancisco.primecoin.me
; <<>> DiG 9.9.5-3ubuntu0.7-Ubuntu <<>> seed-sanfrancisco.primecoin.me
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28684
;; flags: qr rd ra; QUERY: 1, ANSWER: 26, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;seed-sanfrancisco.primecoin.me. IN A
;; ANSWER SECTION:
seed-sanfrancisco.primecoin.me. 59 IN A 76.74.177.224
seed-sanfrancisco.primecoin.me. 59 IN A 37.194.151.114
seed-sanfrancisco.primecoin.me. 59 IN A 70.122.240.177
seed-sanfrancisco.primecoin.me. 59 IN A 62.210.82.106
seed-sanfrancisco.primecoin.me. 59 IN A 62.210.172.220
seed-sanfrancisco.primecoin.me. 59 IN A 178.248.97.26
seed-sanfrancisco.primecoin.me. 59 IN A 95.167.151.35
seed-sanfrancisco.primecoin.me. 59 IN A 73.161.248.13
seed-sanfrancisco.primecoin.me. 59 IN A 113.146.68.251
seed-sanfrancisco.primecoin.me. 59 IN A 217.218.119.119
seed-sanfrancisco.primecoin.me. 59 IN A 220.248.161.134
seed-sanfrancisco.primecoin.me. 59 IN A 212.114.48.31
seed-sanfrancisco.primecoin.me. 59 IN A 58.137.18.179
seed-sanfrancisco.primecoin.me. 59 IN A 95.28.191.38
seed-sanfrancisco.primecoin.me. 59 IN A 83.83.161.46
seed-sanfrancisco.primecoin.me. 59 IN A 178.140.68.116
seed-sanfrancisco.primecoin.me. 59 IN A 210.61.91.218
seed-sanfrancisco.primecoin.me. 59 IN A 222.255.132.158
seed-sanfrancisco.primecoin.me. 59 IN A 145.131.3.54
seed-sanfrancisco.primecoin.me. 59 IN A 166.70.8.20
seed-sanfrancisco.primecoin.me. 59 IN A 82.40.184.36
seed-sanfrancisco.primecoin.me. 59 IN A 5.189.139.227
seed-sanfrancisco.primecoin.me. 59 IN A 212.11.160.27
seed-sanfrancisco.primecoin.me. 59 IN A 176.101.3.118
seed-sanfrancisco.primecoin.me. 59 IN A 112.120.67.53
seed-sanfrancisco.primecoin.me. 59 IN A 64.15.77.36
;; Query time: 143 msec
;; SERVER: 2001:4860:4860::8844#53(2001:4860:4860::8844)
;; WHEN: Sat Jan 30 17:45:18 PST 2016
;; MSG SIZE rcvd: 475
Fun to start seeing a picture of how many good nodes are floating around out there:
./dnsseed -h seed-sanfrancisco.primecoin.me -n core-sanfrancisco.primecoin.me --wipeban --wipeignore
Starting 4 DNS threads for seed-sanfrancisco.primecoin.me on core-sanfrancisco.primecoin.me (port 53).......done
Starting seeder...done
Starting 96 crawler threads...done
[16-01-30 17:55:48] 89/1531 available (1039 tried in 999s, 9 new, 483 active), 0 banned; 3 DNS requests, 5 db queries
Hope it’s useful to someone