rfcsb.com - dns.ninja
rfcsb.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1785339497 | ||||||
Subdomains
mail.rfcsb.com |
Same first word
rfcsb.com |
Similar names
sfrbc.com |
fsbcr.com |
csbfr.com |
rsfbc.com |
fbsrc.com |
cfrbs.com |
brfsc.com |
frcbs.com |
rfcbs.com |
fsbrc.net |
srfbc.com |
rsfbc.org |
cfsrb.ca |
fsrbc.com |
fbcrs.net |
brfcs.com |
csfbr.com |
rfcbs.net |
sfcbr.org |
DNS History
8 records (4 active, 4 former)
○NSce1.dns.com2020-04-04 → 2020-04-04 · 4 obs
● 2020-04-04 11:31:44
○ 2026-02-17 03:19:52
○ 2026-07-29 15:38:58
●NSce1.xincache.com2026-02-17 → 2026-07-29 · 3 obs
● 2026-02-17 03:19:52
● 2026-07-29 15:38:58
○NSce2.dns.com2020-04-04 → 2020-04-04 · 4 obs
● 2020-04-04 11:31:44
○ 2026-02-17 03:19:52
○ 2026-07-29 15:38:58
●NSce2.xincache.com2026-02-17 → 2026-07-29 · 3 obs
● 2026-02-17 03:19:52
● 2026-07-29 15:38:58
○NSns1.ce.net.cn2015-06-12 → 2017-04-19 · 4 obs
● 2017-04-19 06:26:18
○ 2020-04-04 11:31:44
○ 2026-07-29 15:38:58
●MXmail.rfcsb.com2015-06-12 → 2026-07-29 · 5 obs
● 2020-04-04 11:31:44
○ 2026-07-10 09:22:36
● 2026-07-10 10:02:40
● 2026-07-29 15:38:58
●A183.60.188.2402020-04-04 → 2026-07-29 · 5 obs
● 2020-04-04 11:31:44
○ 2026-07-10 09:22:36
● 2026-07-10 10:02:40
● 2026-07-29 15:38:58
○A183.60.188.2412015-06-12 → 2017-04-19 · 4 obs
● 2017-04-19 06:26:18
○ 2020-04-04 11:31:44
○ 2026-07-29 15:38:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| rfcsb.com | ce1.xincache.com, ce2.xincache.com | 9 records |
✅ Authoritative Response
Server:1.12.0.1
NS records: ce1.xincache.com, ce2.xincache.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rfcsb.com (unsigned zone)
⏱️ Timing
Total: 139ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 183.60.188.240 |
| NS | 2 | ce2.xincache.com, ce1.xincache.com |
| MX | 1 | mail.rfcsb.com (pri: 10) |
| SOA | 1 | ce1.xincache.com enterprise1dnsadmin.dns |
📌 Glue Records Collected
Total: 9
Out-of-bailiwick: 9 (ce1.xincache.com, ce1.xincache.com, ce1.xincache.com...)
Analysis
Hierarchy
rfcsb.com serves as the parent of mail.rfcsb.com.
IP Addresses
rfcsb.com resolves to just one IP address, 183.60.188.240.
Two other host names, along with zhongshiyitong.com, wjshy.com and gdjihua.com, also share IP numbers with rfcsb.com.
Name Servers
rfcsb.com uses two name servers for its delegation: ce1.xincache.com and ce2.xincache.com.
rfcsb.com shares its NS records with other domains, for example xn--msv6p231i.net, eegcoil.com, xdbnm.cn and two others.
rfcsb.com has at least partial name server overlap with other domains, such as ynhbsw.cn, qdcet.cn, xn--54q571fdyx4sc.xn--ses554g and two others.
It is common to find these name servers paired with the name servers ns11.xincache.com.
DNS names with 7 IP addresses:
Hostname ce1.xincache.com directs to 1.12.0.4, 112.80.181.45 and 117.89.178.173 along with 4 other IP addresses.
DNS names with 6 IP addresses:
Hostname ce2.xincache.com directs to 1.12.0.1, 117.89.178.184 and 117.135.128.235 along with 3 other IP addresses.
Both ce1.xincache.com and ce2.xincache.com resolve to 117.135.128.235 IP addresses each.
Mail Servers
The sole mail server for rfcsb.com is mail.rfcsb.com.
mail.rfcsb.com directs to just one IP number, 210.51.169.13.