With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cPtpDomainIndex
Cisco Ptp Domain Index
1.3.6.1.4.1.9.9.760.1.1.1.1.1
This object specifies the domain number used to create logical group of PTP devices. The Clock Domain is a logical group of clocks and devices that synchronize with each other using the PTP protocol. 0 Default domain 1 Alternate domain 1 2 Alternate domain 2 3 Alternate domain 3 4 - 127 User-defined domains 128 - 255 Reserved
Back to CISCO-PTP-MIB MIB page.
IPHost Network monitor allows you to monitor cPtpDomainIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.