frontier-u.jp - robtex.com

frontier-u.jp

DNSSEC⚠️ Not signed
A160.16.117.56🇯🇵 SAKURA-B160.16.0.0/17 SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan
PTRwww.kagawa.ac
NSmaster.dns.ne.jp ⭐
A210.224.172.18🇯🇵 SAKURA-C210.224.160.0/19 (1/OSAKA) SAKURA Internet // WEST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRmaster.dns.ne.jp
NSns1.dns.ne.jp
A61.211.236.1🇯🇵 SAKURA-B61.211.236.0/24 (4/TOKYO) SAKURA Internet // EAST JAPAN BACKBONE 1-8-15 Kyutaro-cho, Chuo Osaka 541-0056, Japan
PTRns1.dns.ne.jp
NSns2.dns.ne.jp
A133.167.21.1🇯🇵 SAKURA-C133.167.21.0/24 (OSAKA) SAKURA Internet // WEST JAPAN BACKBONE Grand Front Osaka Tower A 35F, 4-20 Ofukacho, Kita-ku, Osaka, Osaka 530-0011, Japan
PTRns2.dns.ne.jp
MXmail.frontier-u.jp ⭐
A160.16.64.226🇯🇵 SAKURA-B160.16.0.0/17 SAKURA Internet // EAST JAPAN BACKBONE Sakaisuji Honmachi Bldg. 9F 1-8-14 Minami-Honmachi, Chuo-ku Osaka 541-0054, Japan
PTRmail.kagawa.ac
TXTv=spf1 ip4:124.146.155.50 +ip4:153.149.172.206 +ip4:160.16.64.226 include:_sp...
SOAmaster.dns.ne.jptech@sakura.ad.jp 2025-03-20 #1

jp

DNSSEC🔒 Signed (DS record present)
NSz.dns.jp ⭐
NSa.dns.jp
NSb.dns.jp
NSc.dns.jp
NSd.dns.jp
NSe.dns.jp
NSf.dns.jp
NSg.dns.jp
NSh.dns.jp
SOAz.dns.jproot@dns.jp serial=1778611502

Subdomains

mail.frontier-u.jp
www.frontier-u.jp
gateway.frontier-u.jp
ns.frontier-u.jp

Same first word

frontier-u.jp

DNS History

10 records (5 active, 5 former)

200920112013201520172019202120232025NSmaster.dns.ne.jpns1.dns.ne.jpns2.dns.ne.jpdns1.riverweb.ne.jpdns2.riverweb.ne.jpns.frontier-u.jpns.ube-c.ac.jpMXmail.frontier-u.jpA160.16.117.56180.37.19.195
○NSdns1.riverweb.ne.jp2008-11-29 → 2016-08-21 · 7 obs
● 2008-11-29 20:24:00
● 2016-06-24 18:24:54
○ 2016-07-12 15:26:56
○ 2016-07-20 17:33:44
● 2016-08-21 13:04:22
○ 2026-02-17 02:33:26
○ 2026-05-12 19:56:12
○NSdns2.riverweb.ne.jp2008-11-29 → 2008-11-29 · 3 obs
● 2008-11-29 20:24:00
○ 2026-02-17 02:33:26
○ 2026-05-12 19:56:12
●NSmaster.dns.ne.jp2026-02-17 → 2026-05-12 · 3 obs
○ 2016-08-21 13:04:22
● 2026-02-17 02:33:26
● 2026-05-12 19:56:12
○NSns.frontier-u.jp2015-08-14 → 2016-07-20 · 9 obs
○ 2008-11-29 20:24:00
● 2015-08-14 23:48:10
● 2016-03-29 02:13:26
○ 2016-04-09 01:43:04
○ 2016-06-24 18:24:54
● 2016-07-12 15:26:56
● 2016-07-20 17:33:44
○ 2016-08-21 13:04:22
○ 2026-05-12 19:56:12
○NSns.ube-c.ac.jp2008-11-29 → 2016-07-20 · 7 obs
● 2008-11-29 20:24:00
● 2016-02-03 21:11:08
○ 2016-03-29 02:13:26
○ 2016-07-12 15:26:56
● 2016-07-20 17:33:44
○ 2016-08-21 13:04:22
○ 2026-05-12 19:56:12
●NSns1.dns.ne.jp2026-02-17 → 2026-05-12 · 3 obs
○ 2016-08-21 13:04:22
● 2026-02-17 02:33:26
● 2026-05-12 19:56:12
●NSns2.dns.ne.jp2026-02-17 → 2026-05-12 · 3 obs
○ 2016-08-21 13:04:22
● 2026-02-17 02:33:26
● 2026-05-12 19:56:12
●MXmail.frontier-u.jp2015-08-14 → 2026-05-12 · 3 obs
○ 2008-11-29 20:24:00
● 2015-08-14 23:48:10
● 2026-05-12 19:56:12
●A160.16.117.562026-02-17 → 2026-05-12 · 3 obs
○ 2017-09-13 06:22:24
● 2026-02-17 02:33:26
● 2026-05-12 19:56:12
○A180.37.19.1952015-08-14 → 2017-09-13 · 5 obs
○ 2008-11-29 20:24:00
● 2015-08-14 23:48:10
● 2017-09-13 06:22:24
○ 2026-02-17 02:33:26
○ 2026-05-12 19:56:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
jph.dns.jp, d.dns.jp, a.dns.jp, g.dns.jp...-
frontier-u.jpns1.dns.ne.jp, ns2.dns.ne.jp2 records

✅ Authoritative Response

Server:133.167.21.1

NS records: ns1.dns.ne.jp, ns2.dns.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for frontier-u.jp (unsigned zone)

⏱️ Timing

Total: 1311ms | Queries: -

📄 Records

TypeCountSample Data
A1160.16.117.56
NS2ns1.dns.ne.jp, ns2.dns.ne.jp
MX1mail.frontier-u.jp (pri: 10)
TXT1v=spf1 ip4:124.146.155.50 +ip4:153.149.1
SOA1master.dns.ne.jp tech.sakura.ad.jp

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.dns.ne.jp, ns1.dns.ne.jp)

Analysis

Hierarchy

frontier-u.jp is a parent of mail.frontier-u.jp, www.frontier-u.jp, gateway.frontier-u.jp and ns.frontier-u.jp.

IP Addresses

frontier-u.jp resolves to one IP number: 160.16.117.56.

other host names including www.frontier-u.jp, www.ube-c.ac.jp, kagawa.ac, ns1.kagawa.ac and www.kagawa.ac share IP numbers with frontier-u.jp.

Name Servers

frontier-u.jp is delegated to three name servers master.dns.ne.jp, ns1.dns.ne.jp and ns2.dns.ne.jp.

frontier-u.jp at least partially shares name servers with other domains, for instance tetori.jp, tubev.net, npo-sakura.or.jp, duftender-wind.sakura.ne.jp and neetsensei.sakura.ne.jp.

Host names with one IP number: master.dns.ne.jp points to 210.224.172.18; ns1.dns.ne.jp points to 61.211.236.1; ns2.dns.ne.jp points to 133.167.21.1.

Mail Servers

frontier-u.jp is handled by a single mail server, mail.frontier-u.jp.

mail.frontier-u.jp resolves to IP 160.16.64.226.