Earlier this year on April 20th, we had shared with our readers that FMIRO CCU’s public access z39.50 service run by L2C2 Technologies had achieved 100% host reliability (according to irspy.indexdata.com) and in the process had become the 5th Indian entry into the IRSPY’s global directory of open access z39.50 servers.
We are happy to inform that 2 months on, we have managed to run the server without a single service drop and have continued to maintain our 100% host reliability status. For us this has been a learning exercise and we hope this will encourage more Koha users across India to start opening up their catalogs for copy cataloging by their fellow catalogers.
Host connection reliability
Host connection reliability measures the reliability of the target only in its ability to respond to connections: the display indicates the number of successful connections in the last two months, the total number of attempted connections in that time, and the percentage of successful connections. For example, reliability of 9/15 = 60% indicates that fifteen attempts have been made to connect to the server in the last two months, of which nine (60%) have been successful. 
IRSpy maintains a global registry of information retrieval targets, about 1295 as per recent count (http://irspy.indexdata.com/stats.html), supporting protocols like ANSI/NISO Z39.50 (ISO 23950) and SRU/SRW web services.
About Index Data
Short answer: The guys who publish the Zebra indexing engine and YAZ toolkit and software libraries.
Long answer: Since 1994, Index Data has offered software development, consulting and integration with a focus on search. Our pioneering involvement in open source and open standards dates back to the first release of the YAZ toolkit for Z39.50 in 1995.