Autonomous System details

AS51191

Core-Backbone GmbH · core-backbone.com

Germany

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AS51191 – Core-Backbone GmbH

Field	Value
Country	Germany
Website	core-backbone.com
Hosted domains	147,479
IPv4 addresses	7,168
IPv6 addresses	634,119,069,088,281,054,895,600,000,000
ASN type	Hosting
Registry	ripe
Allocated	15 years ago on Feb 07, 2011
Updated	10 months ago on Jun 25, 2025

Netblock	Company	Num of IPs
130.185.104.0/21	Core-Backbone GmbH	2,048
195.138.240.0/21	Core-Backbone GmbH	2,048
185.24.68.0/22	Core-Backbone GmbH	1,024
185.108.216.0/22	Core-Backbone GmbH	1,024
91.232.96.0/23	Core-Backbone GmbH	512
185.169.24.0/24	Sh S.p.a.	256
185.169.25.0/24	Sh S.p.a.	256
195.138.244.0/24	Core-Backbone GmbH	256

Netblock	Company
2a06:4b00::/29	Core-Backbone GmbH
2a01:4a0:2000::/48	Core-Backbone GmbH
2a01:4a0:2001::/48	Core-Backbone GmbH
2a01:4a0:2002::/48	Core-Backbone GmbH
2a06:4b01:3309::/48	Core-Backbone GmbH
2a06:4b01:330a::/48	Core-Backbone GmbH
2a06:4b01:330c::/48	Core-Backbone GmbH
2a06:4b01:330d::/48	Core-Backbone GmbH
2a06:4b01:330e::/48	Core-Backbone GmbH
2a06:4b01:3310::/48	Core-Backbone GmbH
2a06:4b01:3311::/48	Core-Backbone GmbH
2a06:4b01:3312::/48	Core-Backbone GmbH
2a06:4b01:3313::/48	Core-Backbone GmbH
2a06:4b01:3314::/48	Core-Backbone GmbH
2a06:4b01:3315::/48	Core-Backbone GmbH
2a06:4b01:3316::/48	Core-Backbone GmbH
2a06:4b01:3318::/48	Core-Backbone GmbH
2a06:4b01:3319::/48	Core-Backbone GmbH
2a06:4b01:331a::/48	Core-Backbone GmbH
2a06:4b01:331b::/48	Core-Backbone GmbH
2a06:4b01:331d::/48	Core-Backbone GmbH
2a06:4b01:331e::/48	Core-Backbone GmbH
2a06:4b01:331f::/48	Core-Backbone GmbH
2a06:4b01:3320::/48	Core-Backbone GmbH
2a06:4b01:3321::/48	Core-Backbone GmbH
2a06:4b01:3322::/48	Core-Backbone GmbH
2a06:4b01:3323::/48	Core-Backbone GmbH
2a06:4b01:3326::/48	Core-Backbone GmbH
2a06:4b01:3327::/48	Core-Backbone GmbH
2a06:4b01:3328::/48	Core-Backbone GmbH
2a06:4b01:3329::/48	Core-Backbone GmbH
2a06:4b01:332a::/48	Core-Backbone GmbH
2a06:4b01:332b::/48	Core-Backbone GmbH
2a06:4b01:332c::/48	Core-Backbone GmbH
2a06:4b01:332d::/48	Core-Backbone GmbH
2a06:4b01:332e::/48	Core-Backbone GmbH
2a06:4b01:332f::/48	Core-Backbone GmbH
2a06:4b01:3330::/48	Core-Backbone GmbH
2a06:4b01:3331::/48	Core-Backbone GmbH
2a06:4b01:3332::/48	Core-Backbone GmbH
2a06:4b01:3333::/48	Core-Backbone GmbH
2a06:4b01:3335::/48	Core-Backbone GmbH
2a06:4b01:3336::/48	Core-Backbone GmbH
2a06:4b01:3337::/48	Core-Backbone GmbH
2a06:4b01:3338::/48	Core-Backbone GmbH
2a06:4b01:3339::/48	Core-Backbone GmbH
2a06:4b01:333a::/48	Core-Backbone GmbH
2a06:4b01:333b::/48	Core-Backbone GmbH
2a06:4b01:333c::/48	Core-Backbone GmbH
2a06:4b01:333d::/48	Core-Backbone GmbH
2a06:4b01:333e::/48	Core-Backbone GmbH
2a06:4b01:333f::/48	Core-Backbone GmbH
2a06:4b01:3340::/48	Core-Backbone GmbH
2a06:4b01:3341::/48	Core-Backbone GmbH
2a06:4b01:3342::/48	Core-Backbone GmbH
2a06:4b01:3344::/48	Core-Backbone GmbH
2a06:4b01:3345::/48	Core-Backbone GmbH
2a06:4b01:3346::/48	Core-Backbone GmbH
2a06:4b01:3347::/48	Core-Backbone GmbH
2a06:4b01:3349::/48	Core-Backbone GmbH
2a06:4b01:334a::/48	Core-Backbone GmbH
2a06:4b01:334b::/48	Core-Backbone GmbH
2a06:4b01:334c::/48	Core-Backbone GmbH
2a06:4b01:334d::/48	Core-Backbone GmbH
2a06:4b01:334e::/48	Core-Backbone GmbH
2a06:4b01:334f::/48	Core-Backbone GmbH
2a06:4b01:3351::/48	Core-Backbone GmbH
2a06:4b01:3352::/48	Core-Backbone GmbH
2a06:4b01:3353::/48	Core-Backbone GmbH
2a06:4b01:3354::/48	Core-Backbone GmbH
2a06:4b01:3355::/48	Core-Backbone GmbH
2a06:4b01:3356::/48	Core-Backbone GmbH
2a06:4b01:3358::/48	Core-Backbone GmbH
2a06:4b01:3359::/48	Core-Backbone GmbH
2a06:4b01:335a::/48	Core-Backbone GmbH
2a06:4b01:335b::/48	Core-Backbone GmbH
2a06:4b01:335c::/48	Core-Backbone GmbH
2a06:4b01:335d::/48	Core-Backbone GmbH
2a06:4b01:335e::/48	Core-Backbone GmbH
2a06:4b01:335f::/48	Core-Backbone GmbH
2a06:4b01:3360::/48	Core-Backbone GmbH
2a06:4b01:3361::/48	Core-Backbone GmbH
2a06:4b01:3362::/48	Core-Backbone GmbH
2a06:4b01:3363::/48	Core-Backbone GmbH
2a06:4b01:3364::/48	Core-Backbone GmbH
2a06:4b01:3365::/48	Core-Backbone GmbH
2a06:4b01:3366::/48	Core-Backbone GmbH
2a06:4b01:3367::/48	Core-Backbone GmbH
2a06:4b01:3368::/48	Core-Backbone GmbH
2a06:4b01:3369::/48	Core-Backbone GmbH
2a06:4b01:336a::/48	Core-Backbone GmbH
2a06:4b01:336b::/48	Core-Backbone GmbH
2a06:4b01:336c::/48	Core-Backbone GmbH
2a06:4b01:336d::/48	Core-Backbone GmbH
2a06:4b01:336e::/48	Core-Backbone GmbH
2a06:4b01:336f::/48	Core-Backbone GmbH
2a06:4b01:3370::/48	Core-Backbone GmbH
2a06:4b01:3371::/48	Core-Backbone GmbH
2a06:4b01:3372::/48	Core-Backbone GmbH
2a06:4b01:3373::/48	Core-Backbone GmbH
2a06:4b01:3374::/48	Core-Backbone GmbH
2a06:4b01:3375::/48	Core-Backbone GmbH
2a06:4b01:3376::/48	Core-Backbone GmbH
2a06:4b01:3377::/48	Core-Backbone GmbH
2a06:4b01:3378::/48	Core-Backbone GmbH
2a06:4b01:3379::/48	Core-Backbone GmbH
2a06:4b01:337a::/48	Core-Backbone GmbH
2a06:4b01:3380::/48	Core-Backbone GmbH
2a06:4b01:33c0::/48	Core-Backbone GmbH
2a06:4b01:33e0::/48	Core-Backbone GmbH
2a06:4b01:3400::/48	Core-Backbone GmbH
2a06:4b01:3404::/48	Core-Backbone GmbH
2a06:4b01:3405::/48	Core-Backbone GmbH
2a06:4b01:340c::/48	Core-Backbone GmbH
2a06:4b01:3418::/48	Core-Backbone GmbH
2a06:4b01:341a::/48	Core-Backbone GmbH
2a06:4b01:341b::/48	Core-Backbone GmbH
2a06:4b01:341d::/48	Core-Backbone GmbH
2a06:4b01:341e::/48	Core-Backbone GmbH
2a06:4b01:341f::/48	Core-Backbone GmbH
2a06:4b01:3420::/48	Core-Backbone GmbH
2a06:4b01:3421::/48	Core-Backbone GmbH
2a06:4b01:3422::/48	Core-Backbone GmbH
2a06:4b01:3423::/48	Core-Backbone GmbH
2a06:4b01:3426::/48	Core-Backbone GmbH
2a06:4b01:3427::/48	Core-Backbone GmbH
2a06:4b01:3428::/48	Core-Backbone GmbH
2a06:4b01:3429::/48	Core-Backbone GmbH
2a06:4b01:342a::/48	Core-Backbone GmbH
2a06:4b01:342b::/48	Core-Backbone GmbH
2a06:4b01:342c::/48	Core-Backbone GmbH
2a06:4b01:342d::/48	Core-Backbone GmbH
2a06:4b01:342e::/48	Core-Backbone GmbH
2a06:4b01:342f::/48	Core-Backbone GmbH
2a06:4b01:3430::/48	Core-Backbone GmbH
2a06:4b01:3431::/48	Core-Backbone GmbH
2a06:4b01:3432::/48	Core-Backbone GmbH
2a06:4b01:3433::/48	Core-Backbone GmbH
2a06:4b01:3435::/48	Core-Backbone GmbH
2a06:4b01:3436::/48	Core-Backbone GmbH
2a06:4b01:3437::/48	Core-Backbone GmbH
2a06:4b01:3438::/48	Core-Backbone GmbH
2a06:4b01:3439::/48	Core-Backbone GmbH
2a06:4b01:343a::/48	Core-Backbone GmbH
2a06:4b01:343b::/48	Core-Backbone GmbH
2a06:4b01:343c::/48	Core-Backbone GmbH
2a06:4b01:345a::/48	Core-Backbone GmbH
2a06:4b01:345b::/48	Core-Backbone GmbH
2a06:4b01:3478::/48	Core-Backbone GmbH
2a06:4b01:3480::/48	Core-Backbone GmbH
2a06:4b01:34c0::/48	Core-Backbone GmbH
2a06:4b01:34ec::/48	Core-Backbone GmbH
2a06:4b01:34f0::/48	Core-Backbone GmbH
2a06:4b01:350c::/48	Core-Backbone GmbH
2a06:4b01:3515::/48	Core-Backbone GmbH
2a06:4b01:3518::/48	Core-Backbone GmbH
2a06:4b01:3519::/48	Core-Backbone GmbH
2a06:4b01:351a::/48	Core-Backbone GmbH
2a06:4b01:351b::/48	Core-Backbone GmbH
2a06:4b01:351d::/48	Core-Backbone GmbH
2a06:4b01:351e::/48	Core-Backbone GmbH
2a06:4b01:351f::/48	Core-Backbone GmbH
2a06:4b01:3520::/48	Core-Backbone GmbH
2a06:4b01:3521::/48	Core-Backbone GmbH
2a06:4b01:3522::/48	Core-Backbone GmbH
2a06:4b01:3523::/48	Core-Backbone GmbH
2a06:4b01:3526::/48	Core-Backbone GmbH
2a06:4b01:3527::/48	Core-Backbone GmbH
2a06:4b01:3528::/48	Core-Backbone GmbH
2a06:4b01:3529::/48	Core-Backbone GmbH
2a06:4b01:352a::/48	Core-Backbone GmbH
2a06:4b01:352b::/48	Core-Backbone GmbH
2a06:4b01:352c::/48	Core-Backbone GmbH
2a06:4b01:352d::/48	Core-Backbone GmbH
2a06:4b01:352e::/48	Core-Backbone GmbH
2a06:4b01:352f::/48	Core-Backbone GmbH
2a06:4b01:3530::/48	Core-Backbone GmbH
2a06:4b01:3531::/48	Core-Backbone GmbH
2a06:4b01:3532::/48	Core-Backbone GmbH
2a06:4b01:3533::/48	Core-Backbone GmbH
2a06:4b01:3535::/48	Core-Backbone GmbH
2a06:4b01:3536::/48	Core-Backbone GmbH
2a06:4b01:3537::/48	Core-Backbone GmbH
2a06:4b01:3538::/48	Core-Backbone GmbH
2a06:4b01:3539::/48	Core-Backbone GmbH
2a06:4b01:353a::/48	Core-Backbone GmbH
2a06:4b01:353b::/48	Core-Backbone GmbH
2a06:4b01:353c::/48	Core-Backbone GmbH
2a06:4b01:353d::/48	Core-Backbone GmbH
2a06:4b01:353e::/48	Core-Backbone GmbH
2a06:4b01:353f::/48	Core-Backbone GmbH
2a06:4b01:3540::/48	Core-Backbone GmbH
2a06:4b01:3541::/48	Core-Backbone GmbH
2a06:4b01:3542::/48	Core-Backbone GmbH
2a06:4b01:3544::/48	Core-Backbone GmbH
2a06:4b01:3545::/48	Core-Backbone GmbH
2a06:4b01:3546::/48	Core-Backbone GmbH
2a06:4b01:3547::/48	Core-Backbone GmbH
2a06:4b01:3549::/48	Core-Backbone GmbH
2a06:4b01:354a::/48	Core-Backbone GmbH
2a06:4b01:354b::/48	Core-Backbone GmbH
2a06:4b01:354c::/48	Core-Backbone GmbH
2a06:4b01:354d::/48	Core-Backbone GmbH
2a06:4b01:354e::/48	Core-Backbone GmbH
2a06:4b01:354f::/48	Core-Backbone GmbH
2a06:4b01:3551::/48	Core-Backbone GmbH
2a06:4b01:3552::/48	Core-Backbone GmbH
2a06:4b01:3553::/48	Core-Backbone GmbH
2a06:4b01:3554::/48	Core-Backbone GmbH
2a06:4b01:3555::/48	Core-Backbone GmbH
2a06:4b01:3556::/48	Core-Backbone GmbH
2a06:4b01:3558::/48	Core-Backbone GmbH
2a06:4b01:3559::/48	Core-Backbone GmbH
2a06:4b01:355c::/48	Core-Backbone GmbH
2a06:4b01:355d::/48	Core-Backbone GmbH
2a06:4b01:355e::/48	Core-Backbone GmbH
2a06:4b01:355f::/48	Core-Backbone GmbH
2a06:4b01:3560::/48	Core-Backbone GmbH
2a06:4b01:3561::/48	Core-Backbone GmbH
2a06:4b01:3562::/48	Core-Backbone GmbH
2a06:4b01:3563::/48	Core-Backbone GmbH
2a06:4b01:3564::/48	Core-Backbone GmbH
2a06:4b01:3565::/48	Core-Backbone GmbH
2a06:4b01:3566::/48	Core-Backbone GmbH
2a06:4b01:3567::/48	Core-Backbone GmbH
2a06:4b01:3568::/48	Core-Backbone GmbH
2a06:4b01:3569::/48	Core-Backbone GmbH
2a06:4b01:356a::/48	Core-Backbone GmbH
2a06:4b01:356b::/48	Core-Backbone GmbH
2a06:4b01:356c::/48	Core-Backbone GmbH
2a06:4b01:356d::/48	Core-Backbone GmbH
2a06:4b01:356e::/48	Core-Backbone GmbH
2a06:4b01:356f::/48	Core-Backbone GmbH
2a06:4b01:3570::/48	Core-Backbone GmbH
2a06:4b01:3571::/48	Core-Backbone GmbH
2a06:4b01:3572::/48	Core-Backbone GmbH
2a06:4b01:3573::/48	Core-Backbone GmbH
2a06:4b01:3574::/48	Core-Backbone GmbH
2a06:4b01:3575::/48	Core-Backbone GmbH
2a06:4b01:3576::/48	Core-Backbone GmbH
2a06:4b01:3577::/48	Core-Backbone GmbH
2a06:4b01:3578::/48	Core-Backbone GmbH
2a06:4b01:3579::/48	Core-Backbone GmbH
2a06:4b01:357a::/48	Core-Backbone GmbH

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WHOIS Details

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                                                ASHandle:       AS51191
                                                OrgID:          AS51191
                                                ASName:         AS51191
                                                ASNumber:       AS51191
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 147,479 domain names hosted across 249 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
130.185.109.77	██████████	93,959
185.24.68.9	██████████	4,305
130.185.109.78	██████████	2,668
130.185.109.2	██████████	86
195.138.245.250	██████████	66
185.24.68.234	██████████	47
130.185.109.43	██████████	46
130.185.108.81	██████████	23
185.169.25.22	██████████	22
130.185.104.82	██████████	15

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Hosted Domains API & Database

Peers

There are 4 peers for this ASN.

Peers	Name
AS199524	G-Core Labs S.A.
AS20473	The Constant Company, LLC
AS33891	Core-Backbone GmbH
AS60068	Datacamp Limited

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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams	Name
AS199524	G-Core Labs S.A.
AS20473	The Constant Company, LLC
AS33891	Core-Backbone GmbH
AS60068	Datacamp Limited

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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address	ASN	Details
2a06:4b01:3366::1	AS51191 Core-Backbone GmbH	`0.33ms` from Amsterdam, NL
2a06:4b01:352a::1	AS51191 Core-Backbone GmbH	`0.33ms` from London, GB
185.169.24.240	AS51191 Core-Backbone GmbH	`0.40ms` from Nuernberg, DE
2a06:4b01:3310::1	AS51191 Core-Backbone GmbH	`0.31ms` from Amsterdam, NL
2a06:4b01:331f::1	AS51191 Core-Backbone GmbH	`0.32ms` from Amsterdam, NL
2a06:4b01:3312::1	AS51191 Core-Backbone GmbH	`0.36ms` from Amsterdam, NL
2a06:4b01:334f::1	AS51191 Core-Backbone GmbH	`0.33ms` from Amsterdam, NL
2a06:4b01:336e::1	AS51191 Core-Backbone GmbH	`0.34ms` from Amsterdam, NL
2a06:4b01:3316::1	AS51191 Core-Backbone GmbH	`0.35ms` from Amsterdam, NL
2a06:4b01:356e::1	AS51191 Core-Backbone GmbH	`1.13ms` from London, GB
2a06:4b01:3547::1	AS51191 Core-Backbone GmbH	`1.19ms` from London, GB
2a06:4b01:351a::1	AS51191 Core-Backbone GmbH	`0.88ms` from London, GB
130.185.109.130	AS51191 Core-Backbone GmbH	`0.42ms` from Nuernberg, DE
2a06:4b01:3320::1	AS51191 Core-Backbone GmbH	`0.33ms` from Amsterdam, NL
2a06:4b01:3516::1	AS51191 Core-Backbone GmbH	`7.58ms` from Amsterdam, NL
2a06:4b01:335a::1	AS51191 Core-Backbone GmbH	`0.35ms` from Amsterdam, NL
2a06:4b01:332c::1	AS51191 Core-Backbone GmbH	`0.35ms` from Amsterdam, NL
2a06:4b01:330e::1	AS51191 Core-Backbone GmbH	`0.35ms` from Amsterdam, NL
2a06:4b01:3330::1	AS51191 Core-Backbone GmbH	`0.37ms` from Amsterdam, NL
2a06:4b01:3559::1	AS51191 Core-Backbone GmbH	`1.18ms` from London, GB
2a06:4b01:3546::1	AS51191 Core-Backbone GmbH	`1.06ms` from London, GB
2a06:4b01:357a::1	AS51191 Core-Backbone GmbH	`1.01ms` from London, GB
2a06:4b01:3521::1	AS51191 Core-Backbone GmbH	`0.88ms` from London, GB
2a06:4b01:3549::1	AS51191 Core-Backbone GmbH	`0.94ms` from London, GB
2a06:4b01:3561::1	AS51191 Core-Backbone GmbH	`1.15ms` from London, GB

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
14.243.136.103	AS45899 VNPT Corp	`6.27ms` from Da Nang, VN
98.41.144.183	AS7922 Comcast Cable Communications, LLC	`7.95ms` from Fremont, US
113.175.144.119	AS45899 VNPT Corp	`1.67ms` from Hanoi, VN
218.9.32.87	AS4837 CHINA UNICOM China169 Backbone	`7.05ms` from Harbin, CN
51.24.40.71	AS16509 Amazon.com, Inc.	`0.21ms` from London, GB
86.159.40.151	AS2856 British Telecommunications PLC	`6.50ms` from London, GB
140.188.39.199	AS398823 PEG TECH INC	`0.33ms` from Los Angeles, US
217.147.84.23	AS20860 IOMART CLOUD SERVICES LIMITED	`0.25ms` from Maidenhead, GB
71.236.126.103	AS7922 Comcast Cable Communications, LLC	`13.81ms` from Morris Plains, US
193.188.30.55	AS34081 INCUBATEC GmbH - Srl	`1.08ms` from Munich, DE
165.90.9.7	AS12556 Internet Solutions (Kenya)	`0.50ms` from Nairobi, KE
189.17.51.199	AS4230 CLARO S.A.	`7.89ms` from Rio de Janeiro, BR
187.73.29.247	AS262671 VERO S.A	`11.96ms` from Sao Paulo, BR
211.217.184.199	AS4766 Korea Telecom	`1.28ms` from Seoul, KR
210.22.15.199	AS135061 China Unicom Guangdong IP network	`1.91ms` from Shenzhen, CN
34.83.63.231	AS396982 Google LLC	`0.14ms` from The Dalles, US
87.159.129.151	AS3320 Deutsche Telekom AG	`2.37ms` from Berlin, DE
107.216.51.247	AS7018 AT&T Enterprises, LLC	`7.78ms` from Columbus, US
193.34.118.71	AS44180 ETN Internet GmbH & Co. KG	`5.84ms` from Duesseldorf, DE
121.40.143.7	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.16ms` from Hangzhou, CN
211.198.87.215	AS4766 Korea Telecom	`0.68ms` from Incheon, KR
86.3.171.231	AS5089 Virgin Media Limited	`5.18ms` from London, GB
27.196.5.23	AS4837 CHINA UNICOM China169 Backbone	`6.62ms` from Qingdao, CN
183.102.62.119	AS4766 Korea Telecom	`1.25ms` from Seoul, KR
1.164.219.7	AS3462 Data Communication Business Group	`1.12ms` from Taipei, TW

Traceroute

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

traceroute -a -n -q1 -f2 91.232.96.20

traceroute to 91.232.96.20 (91.232.96.20): 64 hops max, 52 byte packets

2 [AS201011] 5.56.20.209 0.192 ms

3 [AS201011] 80.255.14.81 2.684 ms

4 [AS201011] 81.95.15.130 3.52 ms

5 [AS51191] 91.232.96.20 2.773 ms

Measurement taken from

IPinfo ProbeNet in Frankfurt am Main, DE

On April 25th 2026

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AS215197

Zero Services GmbH

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS51191 at robtex.

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