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Summary

Country	Germany
Domain	auth-tec-on-beta.space
ASN	AS16509
Registry	RIPE
ID	US-A100ROW-19930901

WHOIS Details

inetnum:        51.156.0.0 - 51.157.255.255
netname:        US-A100ROW-19930901
descr:          A100 Row Inc
descr:          Marcel-Breuer-Strasse 12
descr:          80807 Munchen
org:            ORG-ARI3-RIPE
country:        DE
admin-c:        IM4726-RIPE
tech-c:         IM4726-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-ADSI
created:        2018-02-28T15:33:49Z
last-modified:  2026-04-20T09:54:55Z
source:         RIPE
abuse-email:    trustandsafety@support.aws.com
abuse-c:        AWSA3-RIPE
abuse-org:      ORG-ARI3-RIPE

organisation:   ORG-ARI3-RIPE
org-name:       A100 ROW Inc
country:        US
org-type:       LIR
address:        Marcel-Breuer-Strasse 12
address:        80807
address:        Munchen
address:        GERMANY
phone:          +4994178878008
e-mail:         tinam@amazon.com
reg-nr:         4517940 (Delaware)
admin-c:        IM4726-RIPE
tech-c:         IM4726-RIPE
abuse-c:        AWSA3-RIPE
mnt-ref:        MNT-ADSI
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         MNT-ADSI
mnt-by:         RIPE-NCC-HM-MNT
created:        2015-12-08T10:45:00Z
last-modified:  2026-04-29T05:35:49Z
source:         RIPE
abuse-email:    trustandsafety@support.aws.com
abuse-c:        AWSA3-RIPE
abuse-org:      undefined

person:         IP Man
address:        Marcel-Breuer-Strasse 12
address:        80807
address:        Munchen
address:        GERMANY
phone:          +4994178878008
nic-hdl:        IM4726-RIPE
mnt-by:         us-a100row-1-mnt
created:        2015-12-08T10:44:59Z
last-modified:  2015-12-08T10:45:00Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 51.0.0.0/8

Range	ASN	Company	Num of IPs
51.232.0.0/15	AS16509	A100 ROW Inc	131,072
51.34.0.0/15	AS16509	A100 Row Inc	131,072
51.236.0.0/15	AS16509	A100 ROW Inc	131,072
51.252.0.0/15	AS25019	Saudi Telecom Company JSC	131,072
51.48.0.0/15	AS16509	A100 ROW Inc	131,072
51.158.0.0/15	AS12876	Scaleway SAS	131,072
51.192.0.0/15	AS16509	A100 ROW Inc	131,072
51.16.0.0/15	AS16509	A100 Row Inc	131,072
51.196.0.0/15	AS16509	A100 ROW Inc	131,072
51.244.0.0/15	AS16509	A100 ROW Inc	131,072
51.94.0.0/15	AS16509	A100 ROW Inc	131,072
51.176.0.0/15	AS16509	A100 ROW Inc	131,072
51.220.0.0/15	AS16509	A100 ROW Inc	131,072
51.180.0.0/15	AS16509	A100 ROW Inc	131,072
51.224.0.0/15	AS16509	Amazon Data Services European Sovereign Cloud GmbH	131,072
51.182.0.0/15	AS5607	SKY UK Limited	131,072
51.186.0.0/15	AS5607	SKY UK Limited	131,072
51.184.0.0/15	AS16509	A100 ROW Inc	131,072
51.254.0.0/15	AS16276	OVH SAS	131,072
51.172.0.0/15	AS16509	Amazon Data Services European Sovereign Cloud GmbH	131,072
51.190.0.0/15	AS5607	SKY UK Limited	131,072
51.188.0.0/15	AS16509	A100 ROW Inc	131,072
51.248.0.0/15	AS16509	A100 ROW Inc	131,072
51.174.0.0/15	AS29695	Altibox AS	131,072
51.4.0.0/15	AS8075	Microsoft Deutschland MCIO GmbH	131,072
51.6.0.0/15	AS6871		131,072
51.14.0.0/16	AS2856	BT-CENTRAL-PLUS	65,536
51.36.0.0/16	AS43766	MTC KSA	65,536
51.64.0.0/16	AS2856	UK Home Office (The Secretary of State for the Home Department)	65,536
51.219.0.0/16	AS31655	Gamma Telecom Limited	65,536
51.52.0.0/16	AS31655	Gamma Telecom Limited	65,536
51.9.0.0/16	AS6871	PlusNet plc.	65,536
51.109.0.0/16	AS8075	Microsoft Limited	65,536
51.126.0.0/16	AS8075	Microsoft Limited	65,536
51.103.0.0/16	AS8075	Microsoft Limited	65,536
51.211.0.0/16	AS39891	Saudi Telecom Company JSC	65,536
51.111.0.0/16	AS8075	Microsoft Limited	65,536
51.171.0.0/16	AS5466	Eircom Limited	65,536
51.39.0.0/16	AS43766	MTC KSA	65,536
51.138.0.0/16	AS8075	Microsoft Limited	65,536
51.8.0.0/16	AS8075	Microsoft Deutschland MCIO GmbH	65,536
51.240.0.0/16	AS16509	A100 ROW Inc	65,536
51.24.0.0/16	AS16509	A100 ROW Inc	65,536
51.148.0.0/16	AS13037	Zen Internet Limited	65,536
51.125.0.0/16	AS16509	A100 ROW Inc	65,536
51.76.0.0/16	AS16509	A100 ROW Inc	65,536
51.118.0.0/16	AS16509	A100 ROW Inc	65,536
51.195.0.0/16	AS16276	OVH SAS	65,536
51.222.0.0/16	AS16276	OVH Hosting, Inc.	65,536

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
115.87.195.255	AS17552 True Online	`1.09ms` from Bangkok, TH
188.2.15.127	AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o.	`8.85ms` from Belgrade, RS
154.179.36.223	AS8452 TE-AS	`4.86ms` from Cairo, EG
196.77.238.111	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`4.65ms` from Casablanca, MA
119.54.54.175	AS4837 CHINA UNICOM China169 Backbone	`4.37ms` from Changchun, CN
162.219.235.111	AS11031 Orbis Investments (Canada) Limited	`0.88ms` from London, GB
75.73.63.191	AS7922 Comcast Cable Communications, LLC	`4.04ms` from Minneapolis, US
155.212.154.111	AS44559 IT HOSTLINE LTD	`0.19ms` from Moscow, RU
179.119.4.175	AS26599 TELEFÔNICA BRASIL S.A	`9.62ms` from Novo Hamburgo, BR
170.246.129.47	AS28642 Contato Internet EIRELI	`7.72ms` from Novo Hamburgo, BR
88.92.145.207	AS2119 Telenor Norge AS	`16.90ms` from Oslo, NO
172.127.28.255	AS7018 AT&T Enterprises, LLC	`7.20ms` from San Jose, US
213.32.224.143	AS62313 Proact IT UK Limited	`0.98ms` from Stockholm, SE
119.116.198.79	AS4837 CHINA UNICOM China169 Backbone	`4.89ms` from Tieling, CN
94.50.103.175	AS12389 PJSC Rostelecom	`18.79ms` from Yekaterinburg, RU
206.223.236.207	AS262287 Latitude.sh LTDA	`0.18ms` from Amsterdam, NL
37.26.41.223	AS39232 Uninet LLC	`1.30ms` from Baku, AZ
190.89.108.255	AS270372 CEUNET TELECOM EIRELI	`1.62ms` from Brasilia, BR
89.122.171.255	AS9050 Orange Romania S.A.	`0.19ms` from Bucharest, RO
13.247.236.31	AS16509 Amazon.com, Inc.	`0.16ms` from Cape Town, ZA
79.226.40.207	AS3320 Deutsche Telekom AG	`7.21ms` from Frankfurt am Main, DE
86.60.191.15	AS39699 Lounea Palvelut Oy	`12.66ms` from Helsinki, FI
113.187.199.63	AS45899 VNPT Corp	`4.49ms` from Ho Chi Minh City, VN
35.196.132.239	AS396982 Google LLC	`0.14ms` from Moncks Corner, US
96.250.253.143	AS701 Verizon Business	`2.31ms` from New York City, 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 -m14 51.156.0.98

traceroute to 51.156.0.98 (51.156.0.98): 14 hops max, 52 byte packets

2 [AS4837] 139.214.220.254 1.54 ms

3 *

4 [AS4837] 122.141.227.33 1.233 ms

5 *

6 [AS4837] 139.215.222.125 5.139 ms

7 [AS4837] 139.215.222.33 1.065 ms

8 *

9 *

10 *

11 [AS4837] 219.158.96.38 162.035 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Changchun, CN

On May 5th 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.

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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