81.28.12.0/24

AS199524 · G-Core Labs S.A.

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Summary

Country	United States
Domain	gcore.com
ASN	AS199524
Registry	RIPE
ID	LU-GCORELABS-20020416

WHOIS Details

inetnum:        81.28.12.0 - 81.28.15.255
netname:        LU-GCORELABS-20020416
country:        US
geofeed:        https://geofeed.gcore.lu/IP-Range.csv
org:            ORG-WIG6-RIPE
admin-c:        LA5122-RIPE
tech-c:         LA5122-RIPE
status:         ALLOCATED PA
mnt-by:         GCL1-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2021-03-23T15:29:53Z
last-modified:  2026-02-12T14:08:20Z
source:         RIPE
abuse-email:    abuse@gcore.lu
abuse-c:        AC23417-RIPE
abuse-org:      ORG-WIG6-RIPE

organisation:   ORG-WIG6-RIPE
org-name:       G-Core Labs S.A.
country:        LU
org-type:       LIR
address:        2-4, rue Edmond Reuter
address:        L-5326
address:        Contern
address:        LUXEMBOURG
phone:          +375293666245
e-mail:         noc@gcore.lu
abuse-c:        AC23417-RIPE
mnt-ref:        GCL1-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         GCL1-MNT
mnt-by:         RIPE-NCC-HM-MNT
created:        2012-12-05T13:21:56Z
last-modified:  2023-08-02T08:17:23Z
source:         RIPE
abuse-email:    abuse@gcore.lu
abuse-c:        AC23417-RIPE
abuse-org:      undefined

person:         LIR Admin
address:        G-Core Labs S.A.
address:        2 Rue Edmond Reuter
address:        5326 Contern
phone:          +35220880507
e-mail:         noc@gcore.com
nic-hdl:        LA5122-RIPE
mnt-by:         GCL1-MNT
created:        2012-12-05T15:05:34Z
last-modified:  2023-07-17T19:38:48Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.28.0.0/16

Range	ASN	Company	Num of IPs
81.28.160.0/19	AS8439	PJSC Rostelecom	8,192
81.28.32.0/19	AS25306	IsIran	8,192
81.28.80.0/20	AS39647	Enreach Netherlands B.V.	4,096
81.28.144.0/20	AS397766	Fairleigh Dickinson University	4,096
81.28.128.0/20	AS41491	Stadtwerke Kapfenberg GmbH	4,096
81.28.96.0/20	AS41770	Leonard Birritteri trading as IMINGO SERVICES	4,096
81.28.192.0/20	AS24904	K-NET SARL	4,096
81.28.112.0/20	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	4,096
81.28.208.0/20	AS39586	NPP Saturn Telecom Ltd.	4,096
81.28.16.0/20	AS702	Verizon Czech s.r.o.	4,096
81.28.252.0/22	AS206495	Gostaresh Ertebat Azin Kia Company PJSC	1,024
81.28.8.0/22	AS60087	Netsons s.r.l.	1,024
81.28.236.0/23	AS29014	Location Berlin 2	512
81.28.46.0/23	AS25306	kanoon Internet Service Provider	512
81.28.60.0/24	AS25306	IsIran	256
81.28.61.0/24	AS25306	IsIran	256
81.28.7.0/24	AS44709	O.M.C. COMPUTERS & COMMUNICATIONS LTD	256
81.28.112.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.113.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.120.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.121.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.122.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.123.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.124.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.125.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.126.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.127.0/24	AS47887	AL-HADATHEH LIL-ITISALAT WA AL-TECHNOLOGIA CO.	256
81.28.244.0/24	AS51538	TekCom clients network	256
81.28.13.0/24	AS199524	G-Core Labs Customer assignment	256
81.28.246.0/24	AS51538	TekCom clients network	256
81.28.247.0/24	AS51538	TekCom clients network	256
81.28.245.0/24	AS51538	TekCom clients network	256
81.28.15.0/24	AS199524	G-Core Labs Customer assignment	256
81.28.6.0/24	AS204548	O.M.C. COMPUTERS & COMMUNICATIONS LTD	256
81.28.4.0/24	AS210329	O.M.C. COMPUTERS & COMMUNICATIONS LTD	256
81.28.5.0/24	AS210329	O.M.C. COMPUTERS & COMMUNICATIONS LTD	256
81.28.38.0/24	AS25306	Institute ISiran	256
81.28.39.0/24	AS25306	Malek Ashtar University Of Technology	256
81.28.40.0/24	AS25306	Institute Isiran Aghdasieh POP	256
81.28.41.0/24	AS25306	IsIran	256
81.28.42.0/24	AS25306	Elearning Department	256
81.28.43.0/24	AS25306	SaShiraz Industry Company	256
81.28.48.0/24	AS25306	Institute ISiran	256
81.28.52.0/24	AS25306	Iran,Tehran,Aghdasieh POP	256
81.28.59.0/24	AS25306	IsIran	256

Hosted domains

There are 3,194 domain names hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
81.28.12.12	13dl.net	3200

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

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

IP Address	ASN	Details
81.28.12.240	AS199524 G-Core Labs S.A.	`0.12ms` from Amsterdam, NL

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
3.94.158.120	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
37.222.221.40	AS12430 VODAFONE ESPANA S.A.U.	`3.61ms` from Barcelona, ES
154.177.161.248	AS8452 TE-AS	`2.74ms` from Cairo, EG
185.107.176.232	AS24800 BornFiber Service Provider ApS	`6.38ms` from Copenhagen, DK
79.110.170.56	AS208590 Lasagna Ltd	`0.22ms` from Fremont, US
14.183.111.72	AS45899 VNPT Corp	`3.21ms` from Ho Chi Minh City, VN
66.65.181.168	AS12271 Charter Communications Inc	`3.41ms` from New York City, US
141.250.121.168	AS137 Consortium GARR	`9.21ms` from Rome, IT
210.65.185.40	AS3462 Data Communication Business Group	`2.92ms` from Taichung, TW
86.98.154.72	AS5384 Emirates Internet	`4.42ms` from Al Fujairah City, AE
73.251.102.184	AS7922 Comcast Cable Communications, LLC	`12.91ms` from Ashburn, US
203.86.45.136	AS24147 BEIJING CBD TELECOM CO,.LTD	`7.46ms` from Beijing, CN
64.223.219.184	AS13977 Fidium	`5.71ms` from Boston, US
222.214.218.136	AS4134 CHINANET-BACKBONE	`4.88ms` from Chengdu, CN
207.225.130.8	AS209 CenturyLink Communications, LLC	`11.87ms` from Chicago, US
173.222.176.184	AS16625 Akamai Technologies, Inc.	`0.22ms` from Dallas, US
79.246.197.248	AS3320 Deutsche Telekom AG	`4.60ms` from Frankfurt am Main, DE
178.32.160.40	AS16276 OVH SAS	`0.06ms` from Gravelines, FR
14.248.150.248	AS45899 VNPT Corp	`1.00ms` from Hanoi, VN
103.73.215.184	AS55341 ORANGEINFOCOM-IN-IN	`10.14ms` from Indore, IN
86.133.178.168	AS2856 British Telecommunications PLC	`5.04ms` from London, GB
176.173.18.248	AS5410 Bouygues Telecom SA	`0.99ms` from Marseille, FR
148.204.255.8	AS3484 Instituto Politecnico Nacional	`1.51ms` from Mexico City, MX
76.148.136.40	AS7922 Comcast Cable Communications, LLC	`3.55ms` from Miami, US
121.224.75.200	AS4134 CHINANET-BACKBONE	`4.82ms` from Nanjing, CN

Traceroute

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

traceroute -a -n -q1 81.28.12.12

traceroute to 81.28.12.12 (81.28.12.12): 64 hops max, 52 byte packets

1 [AS202422] 185.101.139.2 0.159 ms

2 [AS199524] 92.223.126.129 0.338 ms

3 [AS199524] 81.28.12.12 0.121 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On March 13th 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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