91.221.120.0/23

AS51887 · FREQUENTIS COMSOFT GmbH

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Summary

Country	Germany
Domain	frequentis.com
ASN	AS51887
Registry	RIPE
ID	COMSOFT-NET

WHOIS Details

inetnum:        91.221.120.0 - 91.221.121.255
netname:        COMSOFT-NET
country:        DE
org:            ORG-COMS1-RIPE
admin-c:        CVR110-RIPE
tech-c:         RW4330-RIPE
tech-c:         ILK12480-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ILK-RIPE-MNT
mnt-routes:     ILK-RIPE-MNT
mnt-domains:    ILK-RIPE-MNT
notify:         netmaster@ilk.net
created:        2016-05-30T06:59:06Z
last-modified:  2021-08-03T09:10:48Z
source:         RIPE
sponsoring-org: ORG-II2-RIPE
abuse-email:    abuse@frequentis.com
abuse-c:        AC29865-RIPE
abuse-org:      ORG-II2-RIPE

organisation:   ORG-COMS1-RIPE
org-name:       FREQUENTIS COMSOFT GmbH
country:        DE
org-type:       OTHER
address:        FREQUENTIS COMSOFT GmbH
address:        Wachhausstrasse 5a
address:        D-76277 Karlsruhe
address:        Germany
e-mail:         comsoft@frequentis.com
notify:         netmaster@ilk.net
abuse-c:        AC29865-RIPE
mnt-ref:        ILK-RIPE-MNT
mnt-by:         ILK-RIPE-MNT
created:        2016-05-27T07:18:18Z
last-modified:  2022-12-01T16:20:55Z
source:         RIPE

role:           Netmaster ILK
address:        ILK Internet GmbH
address:        Netmaster
address:        Am Sandfeld 15
address:        D-76149 Karlsruhe
address:        Germany
phone:          +49 721 9100 0
fax-no:         +49 721 9100 191
remarks:        Geschaeftsfuehrer Matthias Felger
remarks:        AG Mannheim HRB 107037
e-mail:         netmaster@ilk.net
org:            ORG-II2-RIPE
admin-c:        MF1
tech-c:         MF1
admin-c:        JM190665-RIPE
tech-c:         JM190665-RIPE
admin-c:        RS4-ORG
tech-c:         RS4-ORG
admin-c:        KF16-RIPE
tech-c:         KF16-RIPE
nic-hdl:        ILK12480-RIPE
notify:         netmaster@ilk.net
notify:         hostmaster@ilk.net
mnt-by:         ILK-RIPE-MNT
created:        2010-11-02T10:42:32Z
last-modified:  2012-06-13T13:52:15Z
source:         RIPE

person:         Constantin von Reden
address:        FREQUENTIS COMSOFT GmbH
address:        Wachhausstrasse 5a
address:        D-76277 Karlsruhe
address:        Germany
phone:          +49 721 9497 0
fax-no:         +49 721 9497 129
e-mail:         constantin.vonreden@frequentis.com
nic-hdl:        CVR110-RIPE
org:            ORG-COMS1-RIPE
notify:         netmaster@ilk.net
mnt-by:         ILK-RIPE-MNT
created:        2021-08-03T09:10:48Z
last-modified:  2021-08-03T09:10:48Z
source:         RIPE

person:         Ralph Wiedemann
address:        FREQUENTIS COMSOFT GmbH
address:        Wachhausstrasse 5a
address:        D-76277 Karlsruhe
address:        Germany
phone:          +49 721 9497 0
fax-no:         +49 721 9497 357
e-mail:         Ralph.WIEDEMANN@frequentis.com
nic-hdl:        RW4330-RIPE
org:            ORG-COMS1-RIPE
notify:         netmaster@ilk.net
mnt-by:         ILK-RIPE-MNT
created:        2016-04-20T09:53:14Z
last-modified:  2018-04-23T09:49:19Z
source:         RIPE

route:          91.221.120.0/23
descr:          COMSOFT-NET
origin:         AS12480
org:            ORG-COMS1-RIPE
notify:         netmaster@ilk.net
mnt-by:         ILK-RIPE-MNT
created:        2011-02-22T09:48:22Z
last-modified:  2018-04-23T09:31:13Z
source:         RIPE

organisation:   ORG-COMS1-RIPE
org-name:       FREQUENTIS COMSOFT GmbH
country:        DE
org-type:       OTHER
address:        FREQUENTIS COMSOFT GmbH
address:        Wachhausstrasse 5a
address:        D-76277 Karlsruhe
address:        Germany
e-mail:         comsoft@frequentis.com
notify:         netmaster@ilk.net
abuse-c:        AC29865-RIPE
mnt-ref:        ILK-RIPE-MNT
mnt-by:         ILK-RIPE-MNT
created:        2016-05-27T07:18:18Z
last-modified:  2022-12-01T16:20:55Z
source:         RIPE

route:          91.221.120.0/23
descr:          COMSOFT-NET
origin:         AS51887
org:            ORG-COMS1-RIPE
notify:         netmaster@ilk.net
mnt-by:         ILK-RIPE-MNT
created:        2011-02-22T09:48:22Z
last-modified:  2018-04-23T09:31:13Z
source:         RIPE

organisation:   ORG-COMS1-RIPE
org-name:       FREQUENTIS COMSOFT GmbH
country:        DE
org-type:       OTHER
address:        FREQUENTIS COMSOFT GmbH
address:        Wachhausstrasse 5a
address:        D-76277 Karlsruhe
address:        Germany
e-mail:         comsoft@frequentis.com
notify:         netmaster@ilk.net
abuse-c:        AC29865-RIPE
mnt-ref:        ILK-RIPE-MNT
mnt-by:         ILK-RIPE-MNT
created:        2016-05-27T07:18:18Z
last-modified:  2022-12-01T16:20:55Z
source:         RIPE

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

4 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
91.221.120.65	AS51887 FREQUENTIS COMSOFT GmbH	`2.47ms` from Frankfurt am Main, DE

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
74.110.226.55	AS701 Verizon Business	`4.73ms` from Ashburn, US
181.26.3.55	AS22927 Telefonica de Argentina	`1.79ms` from Buenos Aires, AR
61.157.45.7	AS38283 CHINANET SiChuan Telecom Internet Data Center	`2.43ms` from Chengdu, CN
177.89.159.215	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`9.72ms` from Fortaleza, BR
87.128.173.167	AS3320 Deutsche Telekom AG	`0.63ms` from Hamburg, DE
154.92.40.39	AS132839 POWER LINE DATACENTER	`1.41ms` from Hong Kong, HK
86.137.241.151	AS2856 British Telecommunications PLC	`4.29ms` from London, GB
78.110.74.103	AS39273 Kalaam Telecom Bahrain B.S.C.	`2.29ms` from Manama, BH
82.48.130.135	AS3269 Telecom Italia S.p.A.	`2.22ms` from Milan, IT
89.254.126.231	AS41483 Telia Norge AS	`1.75ms` from Oslo, NO
54.158.142.151	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
170.106.184.215	AS132203 Tencent Building, Kejizhongyi Avenue	`0.25ms` from San Jose, US
210.105.16.119	AS4766 Korea Telecom	`2.70ms` from Seoul, KR
218.83.71.103	AS4812 China Telecom (Group)	`6.13ms` from Shanghai, CN
46.254.10.215	AS42695 Cleura AB	`1.01ms` from Stockholm, SE
4.248.230.183	AS8075 Microsoft Corporation	`0.17ms` from Toronto, CA
109.187.230.199	AS28812 PJSC "Bashinformsvyaz"	`9.64ms` from Yekaterinburg, RU
93.117.86.39	AS12479 Orange Espagne SA	`7.21ms` from Zaragoza, ES
47.36.243.199	AS20115 Charter Communications LLC	`19.01ms` from Atlanta, US
68.248.145.119	AS7018 AT&T Enterprises, LLC	`11.98ms` from Atlanta, US
113.235.17.135	AS4837 CHINA UNICOM China169 Backbone	`10.86ms` from Liaoyang, CN
86.172.226.231	AS2856 British Telecommunications PLC	`5.15ms` from London, GB
90.198.137.215	AS5607 Sky UK Limited	`13.07ms` from London, GB
12.188.91.199	AS7018 AT&T Enterprises, LLC	`4.56ms` from Los Angeles, US
73.0.94.23	AS7922 Comcast Cable Communications, LLC	`7.72ms` from Miami, US

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f2 -m7 91.221.121.145

traceroute to 91.221.121.145 (91.221.121.145): 7 hops max, 52 byte packets

2 [AS6939] 216.66.82.41 7.117 ms

3 *

4 [] 80.81.193.20 34.522 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Iasi, RO

On August 22nd 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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