Summary

ASN	AS40831 Mass General Brigham Incorporated
BGP	155.52.0.0/17
IPs with RDNS	60
Hosted Domains	0
Pingable IPs	0
Router IPs	0


155.52.91.0	—	0
155.52.91.1	vlan691-gw.dfci.harvard.edu	0
155.52.91.2	dcores1-g-v691.dfci.harvard.edu	0
155.52.91.3	dcores2-g-v691.dfci.harvard.edu	0
155.52.91.4	dhims4s1ups1.neteng.partners.org	0
155.52.91.5	—	0
155.52.91.6	—	0
155.52.91.7	—	0
155.52.91.8	—	0
155.52.91.9	—	0
155.52.91.10	—	0
155.52.91.11	—	0
155.52.91.12	—	0
155.52.91.13	—	0
155.52.91.14	—	0
155.52.91.15	—	0
155.52.91.16	—	0
155.52.91.17	—	0
155.52.91.18	—	0
155.52.91.19	—	0
155.52.91.20	—	0
155.52.91.21	—	0
155.52.91.22	—	0
155.52.91.23	—	0
155.52.91.24	—	0
155.52.91.25	—	0
155.52.91.26	—	0
155.52.91.27	—	0
155.52.91.28	—	0
155.52.91.29	—	0
155.52.91.30	—	0
155.52.91.31	—	0
155.52.91.32	—	0
155.52.91.33	—	0
155.52.91.34	—	0
155.52.91.35	—	0
155.52.91.36	—	0
155.52.91.37	—	0
155.52.91.38	—	0
155.52.91.39	—	0
155.52.91.40	—	0
155.52.91.41	—	0
155.52.91.42	—	0
155.52.91.43	—	0
155.52.91.44	—	0
155.52.91.45	—	0
155.52.91.46	—	0
155.52.91.47	—	0
155.52.91.48	—	0
155.52.91.49	—	0
155.52.91.50	dfcihim4.dfci.harvard.edu	0
155.52.91.51	—	0
155.52.91.52	—	0
155.52.91.53	—	0
155.52.91.54	—	0
155.52.91.55	—	0
155.52.91.56	—	0
155.52.91.57	—	0
155.52.91.58	—	0
155.52.91.59	—	0
155.52.91.60	—	0
155.52.91.61	—	0
155.52.91.62	—	0
155.52.91.63	—	0
155.52.91.64	—	0
155.52.91.65	—	0
155.52.91.66	—	0
155.52.91.67	—	0
155.52.91.68	—	0
155.52.91.69	—	0
155.52.91.70	—	0
155.52.91.71	—	0
155.52.91.72	—	0
155.52.91.73	—	0
155.52.91.74	—	0
155.52.91.75	—	0
155.52.91.76	—	0
155.52.91.77	—	0
155.52.91.78	—	0
155.52.91.79	—	0
155.52.91.80	—	0
155.52.91.81	—	0
155.52.91.82	—	0
155.52.91.83	—	0
155.52.91.84	—	0
155.52.91.85	—	0
155.52.91.86	—	0
155.52.91.87	—	0
155.52.91.88	—	0
155.52.91.89	—	0
155.52.91.90	—	0
155.52.91.91	—	0
155.52.91.92	—	0
155.52.91.93	—	0
155.52.91.94	—	0
155.52.91.95	—	0
155.52.91.96	—	0
155.52.91.97	—	0
155.52.91.98	—	0
155.52.91.99	—	0
155.52.91.100	—	0
155.52.91.101	bioinf.dfci.harvard.edu	0
155.52.91.102	—	0
155.52.91.103	—	0
155.52.91.104	cvcback.dfci.harvard.edu	0
155.52.91.105	—	0
155.52.91.106	—	0
155.52.91.107	—	0
155.52.91.108	npia00ea3.partners.org	0
155.52.91.109	—	0
155.52.91.110	—	0
155.52.91.111	—	0
155.52.91.112	—	0
155.52.91.113	—	0
155.52.91.114	—	0
155.52.91.115	—	0
155.52.91.116	—	0
155.52.91.117	—	0
155.52.91.118	—	0
155.52.91.119	lenovo-7ebf614d.dfci.harvard.edu	0
155.52.91.120	—	0
155.52.91.121	lro-cvc.dfci.harvard.edu	0
155.52.91.122	—	0
155.52.91.123	yasmen.dfci.harvard.edu	0
155.52.91.124	—	0
155.52.91.125	mif.dfci.harvard.edu	0
155.52.91.126	angelika-79d1d4.dfci.harvard.edu	0
155.52.91.127	—	0
155.52.91.128	—	0
155.52.91.129	valued-4d57f335.dfci.harvard.edu	0
155.52.91.130	biacorehims4525.dfci.harvard.edu	0
155.52.91.131	—	0
155.52.91.132	—	0
155.52.91.133	—	0
155.52.91.134	—	0
155.52.91.135	—	0
155.52.91.136	npid47c6b.dfci.harvard.edu	0
155.52.91.137	npi7e1350.dfci.harvard.edu	0
155.52.91.138	—	0
155.52.91.139	w0043213.dfci.harvard.edu	0
155.52.91.140	dhcp-155-52-91-140.dfci.harvard.edu	0
155.52.91.141	reche.dfci.harvard.edu	0
155.52.91.142	—	0
155.52.91.143	—	0
155.52.91.144	—	0
155.52.91.145	gelimager.dfci.harvard.edu	0
155.52.91.146	—	0
155.52.91.147	—	0
155.52.91.148	—	0
155.52.91.149	dhcp-155-52-91-149.dfci.harvard.edu	0
155.52.91.150	—	0
155.52.91.151	—	0
155.52.91.152	udp01129723uds.dfci.harvard.edu	0
155.52.91.153	dhcp-155-52-91-153.dfci.harvard.edu	0
155.52.91.154	w0042319w.dfci.harvard.edu	0
155.52.91.155	jonathan-him432.dfci.harvard.edu	0
155.52.91.156	dfci-cb66b71498.dfci.harvard.edu	0
155.52.91.157	—	0
155.52.91.158	—	0
155.52.91.159	—	0
155.52.91.160	dhcp-155-52-91-160.dfci.harvard.edu	0
155.52.91.161	dde-vostro.dfci.harvard.edu	0
155.52.91.162	dfci-brusic.dfci.harvard.edu	0
155.52.91.163	cathy-wus-imac.dfci.harvard.edu	0
155.52.91.164	bio.dfci.harvard.edu	0
155.52.91.165	dfci-cb66b71498.dfci.harvard.edu	0
155.52.91.166	—	0
155.52.91.167	w0061603.dfci.harvard.edu	0
155.52.91.168	wrt160nv3.dfci.harvard.edu	0
155.52.91.169	w0042360w.dfci.harvard.edu	0
155.52.91.170	w0126191.dfci.harvard.edu	0
155.52.91.171	—	0
155.52.91.172	—	0
155.52.91.173	—	0
155.52.91.174	—	0
155.52.91.175	him.dfci.harvard.edu	0
155.52.91.176	—	0
155.52.91.177	young-pc.dfci.harvard.edu	0
155.52.91.178	npiae34cdb.dfci.harvard.edu	0
155.52.91.179	—	0
155.52.91.180	dhcp-155-52-91-180.dfci.harvard.edu	0
155.52.91.181	—	0
155.52.91.182	—	0
155.52.91.183	hims440-imac-g5.dfci.harvard.edu	0
155.52.91.184	—	0
155.52.91.185	—	0
155.52.91.186	—	0
155.52.91.187	—	0
155.52.91.188	w0043434.dfci.harvard.edu	0
155.52.91.189	—	0
155.52.91.190	—	0
155.52.91.191	—	0
155.52.91.192	dhcp-155-52-91-192.dfci.harvard.edu	0
155.52.91.193	w000136788w.dfci.harvard.edu	0
155.52.91.194	xrx91ace7.dfci.harvard.edu	0
155.52.91.195	dfci-5x889ewbj9.dfci.harvard.edu	0
155.52.91.196	—	0
155.52.91.197	—	0
155.52.91.198	brazin-desktop.dfci.harvard.edu	0
155.52.91.199	—	0
155.52.91.200	—	0
155.52.91.201	—	0
155.52.91.202	yjkang.dfci.harvard.edu	0
155.52.91.203	—	0
155.52.91.204	—	0
155.52.91.205	hp16997650210.dfci.harvard.edu	0
155.52.91.206	bruker-a6312e75.dfci.harvard.edu	0
155.52.91.207	—	0
155.52.91.208	—	0
155.52.91.209	—	0
155.52.91.210	—	0
155.52.91.211	—	0
155.52.91.212	—	0
155.52.91.213	dhcp-155-52-91-213.dfci.harvard.edu	0
155.52.91.214	yuxing-laptop.dfci.harvard.edu	0
155.52.91.215	w0041163.dfci.harvard.edu	0
155.52.91.216	reinherzlab-airport.dfci.harvard.edu	0
155.52.91.217	—	0
155.52.91.218	—	0
155.52.91.219	mallis-desktop.dfci.harvard.edu	0
155.52.91.220	—	0
155.52.91.221	—	0
155.52.91.222	—	0
155.52.91.223	npi9f0641.dfci.harvard.edu	0
155.52.91.224	him442-ibm-tc.dfci.harvard.edu	0
155.52.91.225	—	0
155.52.91.226	—	0
155.52.91.227	w0109452.dfci.harvard.edu	0
155.52.91.228	—	0
155.52.91.229	—	0
155.52.91.230	—	0
155.52.91.231	—	0
155.52.91.232	—	0
155.52.91.233	d8n5ft71.dfci.harvard.edu	0
155.52.91.234	—	0
155.52.91.235	—	0
155.52.91.236	—	0
155.52.91.237	—	0
155.52.91.238	—	0
155.52.91.239	—	0
155.52.91.240	—	0
155.52.91.241	—	0
155.52.91.242	—	0
155.52.91.243	—	0
155.52.91.244	—	0
155.52.91.245	—	0
155.52.91.246	—	0
155.52.91.247	—	0
155.52.91.248	—	0
155.52.91.249	—	0
155.52.91.250	—	0
155.52.91.251	—	0
155.52.91.252	—	0
155.52.91.253	—	0
155.52.91.254	—	0
155.52.91.255	—	0

Traceroute

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

traceroute -a -n -q1 -f2 -m6 155.52.91.116

traceroute to 155.52.91.116 (155.52.91.116): 6 hops max, 52 byte packets

2 [AS37684] 41.242.0.246 0.283 ms

3 [AS37100] 105.21.42.57 0.678 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Nairobi, KE

On December 28th 2025