91.237.138.0/24

AS34891 · Urzad Miasta Stolecznego Warszawa

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Summary

Country	Poland
Domain	um.warszawa.pl
ASN	AS34891
Parent Range	91.237.138.0/23
Registry	RIPE
ID	UM-WARSZAWA-NET2

WHOIS Details

inetnum:        91.237.138.0 - 91.237.139.255
netname:        UM-Warszawa-NET2
country:        PL
org:            ORG-UMSW1-RIPE
sponsoring-org: ORG-NTS2-RIPE
admin-c:        KS344-RIPE
tech-c:         KS344-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         UMW-MNT
mnt-routes:     UMW-MNT
mnt-domains:    UMW-MNT
created:        2012-03-26T11:23:51Z
last-modified:  2022-09-23T11:46:36Z
source:         RIPE
abuse-email:    abuse@um.warszawa.pl
abuse-c:        OAH22-RIPE
abuse-org:      ORG-NTS2-RIPE

organisation:   ORG-UMSW1-RIPE
org-name:       Urzad Miasta Stolecznego Warszawa
country:        PL
org-type:       OTHER
address:        pl. Bankowy 3/5
address:        00-950 Warsaw
address:        Poland
phone:          +48 22 4433377
e-mail:         kszymanski@um.warszawa.pl
admin-c:        KS344-RIPE
admin-c:        ATMA2-RIPE
tech-c:         ATMA1-RIPE
abuse-c:        OAH22-RIPE
notify:         registry@atm.com.pl
mnt-by:         ATMAN-MNT
mnt-by:         UMWAWA-MNT
mnt-ref:        UMWAWA-MNT
mnt-ref:        ATMAN-MNT
created:        2005-04-25T13:01:45Z
last-modified:  2022-12-01T16:57:21Z
source:         RIPE

person:         Krzysztof Szymanski
address:        Urzad Miasta Stolecznego Warszawa
phone:          +48 22 4433322
nic-hdl:        KS344-RIPE
created:        2009-10-15T08:34:59Z
last-modified:  2017-10-30T22:07:18Z
source:         RIPE
mnt-by:         UMW-MNT

route:          91.237.138.0/23
descr:          Urzad Miasta Stolecznego Warszawa
origin:         AS34891
mnt-by:         UMW-MNT
created:        2012-05-21T09:57:10Z
last-modified:  2012-05-21T09:57:10Z
source:         RIPE

Overlapping Ranges

BGP prefixes that contain 91.237.138.0/24

Range	ASN	Company	Num of IPs
91.237.138.0/23	AS34891	Urzad Miasta Stolecznego Warszawa	512

Nearby Ranges

BGP prefixes that overlap with 91.237.0.0/16

Range	ASN	Company	Num of IPs
91.237.204.0/22	AS9213	Arden-A Ltd	1,024
91.237.156.0/22	AS57998	ANFA FAJER Sp.J.	1,024
91.237.44.0/22	AS3561	Segna Technologies	1,024
91.237.236.0/22	AS56624	Rocketnet s.r.o	1,024
91.237.244.0/22	AS50392	LLC Campus Networks	1,024
91.237.200.0/22	AS52040	LLC MediaKvant	1,024
91.237.24.0/22	AS57949	PE Holenishchev Andrii Olexandrovich	1,024
91.237.132.0/22	AS3212	Broadband Network Services	1,024
91.237.224.0/22	AS39507	Biznes Swiatlowodem Sp. z o.o.	1,024
91.237.38.0/23	AS197732	OLLINK SARL	512
91.237.182.0/23	AS58000	Nikita Sergienko	512
91.237.130.0/23	AS58034	AEROPORTUL INTERNATIONAL AVRAM IANCU CLUJ RA	512
91.237.138.0/23	AS34891	Urzad Miasta Stolecznego Warszawa	512
91.237.88.0/23	AS56813	Schlund Technologies GmbH	512
91.237.168.0/23	AS35493	Belnet Snina, s.r.o.	512
91.237.112.0/23	AS198713	Mickiewicza 14	512
91.237.100.0/23	AS61317	CryonHOST GmbH	512
91.237.54.0/23	AS57988	Foton Company Ltd	512
91.237.16.0/23	AS198090	LIBRA S.R.L.	512
91.237.114.0/23	AS57981	Kachanovskiy Sergey Sergeevich	512
91.237.136.0/23	AS201562	ARTUR CICHECKI GLOBNET	512
91.237.34.0/23	AS60717	RSCS AS	512
91.237.160.0/23	AS198327	Global Polska - Tomasz Zaplacinski	512
91.237.154.0/23	AS57998	ANFA FAJER Sp.J.	512
91.237.172.0/23	AS198430	vSolutions Pawel Gruszecki	512
91.237.186.0/23	AS56676	Trytek LLC	512
91.237.40.0/23	AS57962	LLC Ug telekom grup	512
91.237.72.0/23	AS51101	JKP VIDEONET Dziub Jaroslaw	512
91.237.98.0/23	AS43513	Sia Nano IT	512
91.237.102.0/23	AS15669	BIX.BG Ltd.	512
91.237.186.0/23	AS44056	Trytek LLC	512
91.237.80.0/23	AS57966	INTRATEL Sp. z o.o.	512
91.237.228.0/23	AS39507	Biznes Swiatlowodem Sp. z o.o.	512
91.237.82.0/23	AS50466	Noutek Ltd	512
91.237.195.0/24	AS210878	Treadstone Business Development S.R.L.	256
91.237.51.0/24	AS209012	MULTISOFT LLC	256
91.237.190.0/24	AS198637	ZPUE S.A.	256
91.237.87.0/24	AS208925	Global Tech Distribution s.r.o.	256
91.237.143.0/24	AS207388	Xantho UAB	256
91.237.176.0/24	AS198628	FIDESSA TRADING UK LIMITED	256
91.237.151.0/24	AS206381	Pinja Digital Oy	256
91.237.150.0/24	AS205368	Fnet LLC	256
91.237.37.0/24	AS198615	RBA-Management LLC	256
91.237.105.0/24	AS202656	New Delhi	256
91.237.219.0/24	AS39507	Biznes Swiatlowodem Sp. z o.o.	256
91.237.104.0/24	AS202656	Dhaka	256
91.237.96.0/24	AS198606	AMST-Systemtechnik GmbH	256
91.237.52.0/24	AS198414	Hekko VPS Servers	256
91.237.65.0/24	AS39394	NeoTel Telefonservice GmbH & Co KG	256
91.237.180.0/24	AS39036	SHORO CJSC	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

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

IP Address	ASN	Details
91.237.138.1	AS34891 Urzad Miasta Stolecznego Warszawa	`0.69ms` from Warsaw, PL

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
39.156.152.88	AS9808 China Mobile Communications Group Co., Ltd.	`3.91ms` from Beijing, CN
37.80.94.104	AS3320 Deutsche Telekom AG	`9.88ms` from Berlin, DE
189.176.22.248	AS8151 UNINET	`0.76ms` from Cancún, MX
109.158.50.8	AS2856 British Telecommunications PLC	`4.87ms` from Erith, GB
65.8.159.8	AS16509 Amazon.com, Inc.	`0.37ms` from Frankfurt am Main, DE
87.179.20.184	AS3320 Deutsche Telekom AG	`7.82ms` from Frankfurt am Main, DE
43.138.233.136	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.21ms` from Guangzhou, CN
58.227.34.136	AS9318 SK Broadband Co Ltd	`5.25ms` from Incheon, KR
46.60.195.24	AS51704 South West Grid for Learning Trust Ltd.	`0.48ms` from London, GB
91.133.4.72	AS48166 FORTEX CJSC	`1.13ms` from Moscow, RU
72.76.92.200	AS701 Verizon Business	`1.51ms` from New York City, US
37.23.233.72	AS12389 PJSC Rostelecom	`5.80ms` from Novosibirsk, RU
35.204.203.168	AS396982 Google LLC	`0.11ms` from Oudeschip, NL
125.242.9.24	AS17858 LG POWERCOMM	`1.94ms` from Seoul, KR
84.174.18.24	AS3320 Deutsche Telekom AG	`2.66ms` from Berlin, DE
46.55.107.232	AS8926 Moldtelecom SA	`4.61ms` from Chisinau, MD
34.68.86.232	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
180.134.208.88	AS9644 SK Telecom	`7.80ms` from Incheon, KR
78.186.44.232	AS9121 Turk Telekomunikasyon Anonim Sirketi	`8.53ms` from Izmir, TR
126.219.126.184	AS17676 SoftBank Corp.	`3.83ms` from Osaka, JP
153.186.157.104	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.14ms` from Osaka, JP
200.217.37.56	AS7738 V tal	`7.86ms` from Rio de Janeiro, BR
172.178.185.120	AS8075 Microsoft Corporation	`0.67ms` from San Jose, US
175.208.233.104	AS4766 Korea Telecom	`1.18ms` from Seoul, KR
116.135.37.152	AS4837 CHINA UNICOM China169 Backbone	`7.23ms` from Taiyuan, CN

Traceroute

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

traceroute -a -n -q1 -f2 91.237.138.177

traceroute to 91.237.138.177 (91.237.138.177): 64 hops max, 52 byte packets

2 [] 195.182.218.81 3.639 ms

3 *

4 *

5 *

6 *

7 [AS34891] 91.237.138.177 1.163 ms

Measurement taken from

IPinfo ProbeNet in Warsaw, PL

On January 19th 2026

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.

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