3 ms·

FWIW, nameservers lhcns1.nlm.nih.gov (130.14.55.72) and lhcns2.nlm.nih.gov (130.14.55.128) still resolve nlm.nih.gov subdomains.

belorn 2y ago
Interesting, those IP addresses are under a different AS and under a different organization, that of National Library of Medicine. They don't seem to use the IT infrastructure of nih.gov.
- g-clef 2y ago
  Yeaaaahhhh...NLM is/was a special beast inside NIH. At the time I was there they had a budget to die for, and Pubmed was in the top 300 websites in the world (both are probably still true). NLM pushed so much traffic because of Pubmed that they had their own internet connection to avoid DoS'ing the commodity desktop traffic of the rest of the NIH.
  - hoofhearted 2y ago
    Yes, this is correct. PubMed is self hosted in a datacenter located within NLM on the NIH campus. They also have their own fiber connections as you mentioned. There is also a legit storage vault located within the building that houses non digital records. We were told that there were medical records going back thousands of years kept there; and possibly as far back as the Egyptian era.
catlikesshrimp 2y ago
What am I doing wrong? I can't ping 130.14.55.128
- edoceo 2y ago
  Maybe those goats don't do ICMP?
- belorn 2y ago
  I can give two tips on how to test this. The most accessible tool I would recommend is zonemaster.net, a tool developed by AFNIC and The Swedish Internet Foundation. Go to advanced and type in nlm.nih.gov as domain, and then the two nameservers listed above and their ip addresses. Run the test and it will present a status summery of the domain and its name servers. (or just use this link: https://zonemaster.net/en/result/4a7d593dce6e167b https://zonemaster.net/en/result/4a7d593dce6e167b) Alternatively you can use the tool dig command tool which is the industry standard for dns debugging and probing. Installing it on windows/mac is a bit of work, but is very easy and convenient on linux. The command here would be "dig @130.14.55.128 nlm.nih.gov". The @ sign is for saying which nameserver to use, and the last part is the domain name you are looking for.

belorn 2y ago

Interesting, those IP addresses are under a different AS and under a different organization, that of National Library of Medicine. They don't seem to use the IT infrastructure of nih.gov.

g-clef 2y ago
Yeaaaahhhh...NLM is/was a special beast inside NIH. At the time I was there they had a budget to die for, and Pubmed was in the top 300 websites in the world (both are probably still true). NLM pushed so much traffic because of Pubmed that they had their own internet connection to avoid DoS'ing the commodity desktop traffic of the rest of the NIH.
- hoofhearted 2y ago
  Yes, this is correct. PubMed is self hosted in a datacenter located within NLM on the NIH campus. They also have their own fiber connections as you mentioned. There is also a legit storage vault located within the building that houses non digital records. We were told that there were medical records going back thousands of years kept there; and possibly as far back as the Egyptian era.

catlikesshrimp 2y ago

What am I doing wrong? I can't ping 130.14.55.128

edoceo 2y ago
Maybe those goats don't do ICMP?
belorn 2y ago
I can give two tips on how to test this. The most accessible tool I would recommend is zonemaster.net, a tool developed by AFNIC and The Swedish Internet Foundation. Go to advanced and type in nlm.nih.gov as domain, and then the two nameservers listed above and their ip addresses. Run the test and it will present a status summery of the domain and its name servers. (or just use this link: https://zonemaster.net/en/result/4a7d593dce6e167b https://zonemaster.net/en/result/4a7d593dce6e167b) Alternatively you can use the tool dig command tool which is the industry standard for dns debugging and probing. Installing it on windows/mac is a bit of work, but is very easy and convenient on linux. The command here would be "dig @130.14.55.128 nlm.nih.gov". The @ sign is for saying which nameserver to use, and the last part is the domain name you are looking for.