DNS Report: a-star.edu.sg

Generated: 2026-08-11T05:45:23-05:00

85/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/303 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/203 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
OKDNSSEC chain15/15DS and DNSKEY detected.
OKCAA policy5/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/201 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55142 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers4/351 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: ec2-13-251-180-0.ap-southeast-1.compute.amazonaws.com
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/2 202
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
13.251.180.0
54.251.88.218
54.151.226.24
AAAA
CNAME
;; communications error to 69.64.44.20#53: timed out
;; communications error to 69.64.44.50#53: timed out
; <<>> DiG 9.18.39-0ubuntu0.22.04.4-Ubuntu <<>> a-star.edu.sg CNAME +short +time=1 +tries=1
;; global options: +cmd
;; no servers could be reached
MX
0 astar-edu-sg0c.mail.protection.outlook.com.
TXT
"cu45p2nn9kcb9hs9c1ds34lc98"
"fp327p0heoti4tcuimpkn8fu56"
"successfactors-site-verification=NjkwNTJiMGFlN2ZkMTE1NmMxNDljOTQwMzI1NmNhNDA2ZTU4ZjJkNDYxNzNmNjJjNjk1NTQ0MzU4OTVkZjQwNg=="
"432mqu6ao4neglshgusak9m3t5"
"openai-domain-verification=dv-hF4hJeNX3xMbjXuxPRDJ6mim"
"v=spf1 include:spf.a-star.edu.sg include:spf.protection.outlook.com a:a-star.edu.sg -all"
"8emru3a8p6dqvmnjndmkvnuvvi"
"perplexity-ai-domain-verification-8wnwqp=uOHETfHSp0ykaNbj0LQ8gY0SW"
"google-site-verification=mMQ3MBwp5SMsi7xsEZzDubDB1hSekhg7f5STch55zeo"
"MS=ms39123724"
"47rd0ujhf7q51fdpka1t4av0fh"
"anthropic-domain-verification-nhfbft=xlXdiZhFLWDDC8sy0HsO77yNp"
NS
ns3.a-star.edu.sg.
ns2.a-star.edu.sg.
ns1.a-star.edu.sg.
SOA
gm-dns.a-star.edu.sg. please_set_email.absolutely.nowhere. 141638 10800 1080 2592000 900
CAA
;; communications error to 69.64.44.20#53: timed out
DS
59659 8 2 C0431AE982E933C85586F7A60CEE9580D1491D87825519CF2E26FF3A 95350E24
DNSKEY
256 3 8 AwEAAcFxPd8X9n9jCjm5A1CP0X2tO5e12HqJE1rVNxRXW8OU8+XYsydI BvoAMXDIfHb4KE9VDIA46aopSmbEXWzof7FhP34p2BGMoC3amDWs4J0l 9xxJTg6AFWplFR1v6dNofkZsany/NCvxLwKRg+82/IIUkLHMlC7xOnEX QiicuwXH
257 3 8 AwEAAeUROO7OyfuXJdfQYjUQtyReLAqyxfs/Atp7EHMpvYdeI4bShYBM NDHSx2M5CkxuEVaZv47fWC5OqY+0L7HjYwx/DjTmtVtcI8Y8EoMXJOdb +6d6+FiOTamDZLJ/j3aw6o1sPB94KOKQjRS6ytC7rzbcPnwc6bBHRu5b XtVYhmBvzX1o6I1K1GMk8hBcnqycJTb+D6OGuybU5uShCAhkTl8CLVFP zf7XtPl5ZuBKICcWK0YGMoF7ASyhxUOunH5Md/QdYo4AqB7UaCS/U8zY noFKefu0zFSAVxtj2nEGWnweYgyDAcgIaNq8YpVnWsRJv9jdjPTBbgcF qYGolQkOoFE=
256 3 8 AwEAAecwexj8PYIdBy5rYTtb2mX+xspARF/PtDeAM0JGh78iQ8LxCLT8 CPJcJZIruncIX/M3jhErXIkXJt5SBg6ItMfZKb+fh7bzP6m2+Z2dBun7 NIA3VPIf8sJ6gfigp6ULJcXKnp4pp8Sek2hfceE8iQEf3Lg95LZ1G3aP Yf78dJJD
RRSIG
NS 8 3 28800 20260816021119 20260811014918 26695 a-star.edu.sg. OSmEyayMyr6LH0Mm1ClV7UxwVRO9eT+4GnfZodKpm7J6asmAy/49qGpb QWicDH/Z9E7LdK5Ubx1to8d20ZF1USYUxSWlPWtmjtwPHCX/rI1EKXQr LEzOwPocjq4wUtNp6kOArjRgzqnuQ61UjsuOWXlE/GX+UGica3pjgq1K gJc=
PTR 8 3 300 20260816021119 20260811014918 26695 a-star.edu.sg. GsjN8EBRNCMvsmO8gqz0WGRvHNfiSdruV4DmEKJfAn2dWPWVaGhfBmO3 k7esYbBXI3GMti6x1KnpfAXCOTM+8ry53VuTKcV5/lgaXc46cWMFfFF6 00Wk+94E6RSrxmdR6sNQK9KGHU0P3XtDK2q8UpxnMCpiK38TDKHzJiH9 NlU=
TXT 8 3 3600 20260815103829 20260810101751 26695 a-star.edu.sg. gb0adRoiRVbNroXNKot3eYHv8KpPiOEcYJ/XnqvDq3MQpRjLPQVS8sKA 2l5L8HfGRnAQSuC+81a/2u5f4C8K9OWUH3Op6OcpRao2bzBQ2fI800lJ faWsc7mgVRwVBfKzSCnmTWgrIAOiI0yuhwaTkV/xvBN+0RuiFp0xssfB iJU=
A 8 3 300 20260816082911 20260811082016 26695 a-star.edu.sg. nk5Mi6TwKd1StFInL5cEegwGRmAIysPoh/ueoMfWQgQCmgbyRjO2RyJf 9sTcbaErsGYqWBMclVHSLR087BrG7srYThnmE40uGB4mnIVHI150EHat xZq3T/em445KNs0oMmVJPP4v8Bsy1R3pttZz1pXu7aedEqFsNHbQ8XxV FOQ=
SOA 8 3 28800 20260816104002 20260811094002 26695 a-star.edu.sg. GhSHKD6WTbeXDcG/s0i+efm1bKkHcSsKAKr0y4byPtKTvqGPIwPD37Yy h6iVWQS8jDxcxSwCflVdXly7xTKc/1AttrOuiI3jMe4F1rohaLqz54iQ Wc5YeZPISZO+weFGQax+wlDrkKJAlAjZRzEZo+M23Zj26Z9zN1WAdTv0 PRQ=
DNSKEY 8 3 216000 20260815184323 20260810181110 26695 a-star.edu.sg. qRBKR6HMcxfrDGPANaf7FqHOGG0EOmLTZt5+FLxM4IUaKQwXycjeb643 SGmbDx8wncjKJlnOk8oHX2CKBdEmBzAWLxey9bKo75dFmst3JJeN1hAA 5f86+55dp5LhUhIaaM4Rc6Ei558k9x/4orKhY63tl1x0ZbkdWJ7QG89c QKQ=
DNSKEY 8 3 216000 20260815184323 20260810181110 59659 a-star.edu.sg. rjsx9xx03z7rQmVr9tH9PvUndEp6s/BR0HM0njRzL2d1Rh2AuJ5qSpKN vtPd/h2EIinl+VJWHfTyeWvf9rYbQKvoi8/FjkCG9QG9GrBA5DB3PQhz wTRnWCqzmi3qDQb6wIto6mc0GJyd3TUXYLDfDr4AREhOt+eA4IicV287 O9FSeWgqDr+DqGS38ANB/HqX2JApHM+sFsa7BRDZOsKbvJGVyLUx2351 i/wWJNP5AC1Pz9Ed/qXgYY59MZPH9atl4JjOgMh4mdvnDn9extf0C1VH yxpEwP7mqKnyscp6aFlvWw7wuj5Ag9vN9A7IksGqS4ywsBzI70ak5ztO HcpuGA==
MX 8 3 600 20260816021119 20260811014918 26695 a-star.edu.sg. N2QBK9zornYltj6zUC35QrEykdNKaobiyI7r8rUwrNQTRYmWZmcV1tc9 /ixuaSx2oPCbsnu+3dk2xW0KZjYUEiJAUwYdN3DNxJ00knw7cdPV19b7 5UDwTGzyJXyCDhk2E1U1Ohf3vnhU91NBqQm46+qCdF18of02vD7WyzeA 2Rw=
DS 8 3 3600 20260814170623 20260807130020 48175 edu.sg. DE6sa6Xu0bwbRkqd/Cq8XwnynUhgNsP3VVeOGtxf3TuzwreMAT0BjZXY MU8Z2/FzK1L+fHtjEFUmrHCeOGvotLUl8Uhc3DyZ379CGDFsV95seWgE WfKgeuDMOVlBNPedaZVpulMJP7JLA/fiBa5XqF2VtIBffkB6EQDagfCq nx/g5IycG8z4uG2Ws7kaB3goggbq9UGf+7N1eDZ/IGt6uLkHXhHWJBtz WdidvXUmSlwtWIRm/knrf+6AmIHw8+zQ8km777xGbpx6JPiA4iwzg7IB YmwE0pR+hsD8ZpJnrOgr/Pl+Z4fGgYh9oNZ9On6TEKIwt9JFZwQ35oVj nBNXbQ==
NSEC3PARAM 8 3 900 20260816021119 20260811014918 26695 a-star.edu.sg. tgLgJ5p3CV4ZElGpl5xyH3Rfzx2tSQczpfbmeq+sB6Z7Ns+kzTTtdSO0 gXRgbketXoZmy/Un2/cNpcE6lp6rKAFJu21whBb2PFtVTZYtOV8FV5tD 1acRQcOvX0gzZoF13J1RMA6/XNEwfws7978lFNtWDattMXfdHHI0DTFR 0Bo=
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP