| 121.0.0.0/8 | WHOIS (APNIC) | Asia Pacific Network Information Center, Pty. Ltd. | AU |
| 121.58.192.0/18 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.192.0/18 | WHOIS (APNIC) | ComClark Network & Technology Corp | PH |
| 121.58.192.0/18 | APNIC assigned | — | PH |
| 121.58.192.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.192.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.196.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.196.0/22 | WHOIS (APNIC) | Converge ICT Corporate and SME | PH |
| 121.58.200.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.200.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.204.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.204.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.208.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.208.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.212.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.212.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.216.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.216.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.220.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.220.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.224.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.224.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.228.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.228.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.232.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.232.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.236.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.236.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.240.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.240.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.244.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.244.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.248.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.248.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.252.0/22 | BGP route | AS17639 ComClark Network & Technology Corp | — |
| 121.58.252.0/22 | WHOIS (APNIC) | Converge ICT Corporate Customer | PH |
| 121.58.232.0/24 | BGP route | AS18188 Ateneo de Manila University | — |
| 121.58.227.0/27 | WHOIS (APNIC) | Sykes-Asia-Inc-Call-Center-Philippines | PH |