101.6.4.51 — AS4538 ERX-CERNET-BKB
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AS4538
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Prefix 101.6.0.0/17
101.6.4.51
PTR
smtp27.
tsinghua.edu.cn
A record for
smtp27.
tsinghua.edu.cn
A
101.6.4.51
A
166.111.204.51
IP numbers used in conjunction
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166.111.204.51
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101.6.0.0/17
33K IPs · AS4538 ERX-CERNET-BKB
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ERX-CERNET-BKB