soufun.com

Checked 22 October 2026, 10:46 UTC · via 8.8.8.8
✗Problems found
19 passed 3 warnings 3 failed 6 info

Registration

info

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2029-04-15

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered
15 April 1999
Last changed
10 October 2022
Expires
15 April 2029
Status
client transfer prohibited, client update prohibited
Registry nameservers
ns.soufun.com, ns1.soufun.com, ns3.soufun.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2029-04-15 #3
    The registration is valid until 2029-04-15 (905 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns.soufun.com, ns1.soufun.com, ns3.soufun.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns.soufun.com, ns1.soufun.com, ns3.soufun.com
NS in the zone
ns.soufun.com, ns1.soufun.com, ns3.soufun.com
NameserverAddressesNetwork (AS)Glue
ns.soufun.com124.251.87.78AS9308 CHINA-ABITCOOL - Abitcool(China) Inc., CN124.251.87.78
ns1.soufun.com124.251.47.105 2403:a200:a200:11fe:a:1803:2000:0AS9308 CHINA-ABITCOOL - Abitcool(China) Inc., CN AS17428 CHINA-ABITCOOL - 21Vianet.Co.,Ltd, CN124.251.47.105
ns3.soufun.com111.230.83.187AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN111.230.83.187

Checks

  • ✓ 3 nameservers #6
    Delegated to ns.soufun.com, ns1.soufun.com, ns3.soufun.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1.soufun.com (glue 124.251.47.105, zone 124.251.47.105, 2403:a200:a200:11fe:a:1803:2000:0). Update the glue at your registrar.
    #8
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 3 IPv4 /24s and 1 IPv6 /48.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS17428 (CHINA-ABITCOOL - 21Vianet.Co.,Ltd, CN): 1 address; AS45090 (TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN): 1 address; AS9308 (CHINA-ABITCOOL - Abitcool(China) Inc., CN): 2 addresses.
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns.soufun.com, ns3.soufun.com.
    #13

Nameservers

fail

2 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns.soufun.com 124.251.87.78no responsenono / no--
ns1.soufun.com 124.251.47.105NOERROR, 185 ms, authoritativenoyes / yesrefusedwho knows?
ns1.soufun.com 2403:a200:a200:11fe:a:1803:2000:0NOERROR, 198 ms, authoritativeOPENyes / yesrefusedwho knows?
ns3.soufun.com 111.230.83.187no responsenono / no--

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns.soufun.com (124.251.87.78): read udp 46.225.38.91:51329->124.251.87.78:53: i/o timeout; ns3.soufun.com (111.230.83.187): read udp 46.225.38.91:36937->111.230.83.187:53: i/o timeout.
    #14
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✗
    Open recursion
    These nameservers resolve names for anyone, which makes them usable for DNS amplification attacks and cache poisoning: ns1.soufun.com (2403:a200:a200:11fe:a:1803:2000:0). Disable recursion on authoritative servers.
    #16
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.soufun.com: "who knows?".
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

fail

serial 1792578302 · primary ns.soufun.com

Found

Primary (MNAME)
ns.soufun.com
Contact (RNAME)
root\@soufun.com
Serial
1792578302
Refresh / retry
900 s / 600 s
Expire
43200 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns1.soufun.com (124.251.47.105)1792578302
ns1.soufun.com (2403:a200:a200:11fe:a:1803:2000:0)1792578302

Checks

  • ✓ Serial 1792578302 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; expire 12h is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 15m, retry 10m, expire 12h, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns.soufun.com is one of the listed nameservers.
  • ✗
    Invalid contact address
    The SOA RNAME "root\\@soufun.com" contains an @; it must be written with a dot instead (hostmaster.example.com).
    #25
  • ✓ Timestamp serial #26
    The serial 1792578302 is a Unix timestamp (2026-10-21 10:25 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

9 records at the apex

Found

Read from
124.251.47.105:53
TypeValueTTL
SOAns.soufun.com. root\@soufun.com. 1792578302 900 600 43200 600600
NSns1.soufun.com.600
NSns.soufun.com.600
NSns3.soufun.com.600
A124.251.87.102600
MX15 mailmx1.soufun.com.600
MX15 mailmx.soufun.com.600
TXT"MS=952473A13D1EC8AA6642ECB5F58B25A8AEF9A67A"600
TXT"v=spf1 ip4:218.30.110.0/24 ip4:124.251.44.0/24 ip4:124.251.46.0/24 ip4:124.251.47.0/24 ip4:58.64.128.116 ip4:192.254.94.248 ipv4:192.155.91.4 ip4:47.89.249.124 ip4:47.52.247.32 ip4:47.56.173.31 -all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, MX 10m, NS 10m. The NS TTL at the parent is 2d and in the zone 10m; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35