Router Naming Convention for ngdc.net, 201104

Regular Expressions:

^[^\.]+\.([a-z]+\d+\.[a-z]+\.cph)\.ngdc\.net$

Statistics:

Training routers with at least two clustered interfaces: 16
Positive Predictive Value: 0.940
True Positives (green): 47
False Positives (red): 3
IP literals extracted (red): 0
False Negatives, identifier extracted (orange): 0
False Negatives, not matched: 2
Training routers with a single interface in suffix: 3

Legend:

Green	+	Inferred identifier, true positive when evaluated against training data
Orange	-	Inferred identifier, false negative when evaluated against training data
Red	!	Inferred identifier, false positive when evaluated against training data
Red	x	Inferred identifier, but contains part of IP address literal embedded in hostname
	~	False negative, not matched
	o	No regex matched the interface, but the interface was the only interface in this suffix on the router
	*	A filter regex matched the interface

Evaluation against training data:

		ar0.ba.cph
217.116.255.89	+	vl928.ar0.ba.cph.ngdc.net
217.116.255.91	+	vl929.ar0.ba.cph.ngdc.net
217.116.255.152	+	vl943.ar0.ba.cph.ngdc.net

		ar1.ba.cph
217.116.255.83	+	vl926.ar1.ba.cph.ngdc.net
217.116.255.85	+	vl927.ar1.ba.cph.ngdc.net
217.116.255.156	+	vl944.ar1.ba.cph.ngdc.net

		ar2.taa.cph
217.116.255.62	+	ge1-0-15.ar2.taa.cph.ngdc.net
217.116.255.60	+	vl909.ar2.taa.cph.ngdc.net

		as1.taa.cph
217.116.255.148	+	ge0-23.as1.taa.cph.ngdc.net
217.116.255.150	+	ge0-24.as1.taa.cph.ngdc.net

		cr0.gl.cph
217.116.255.154	+	te3-1.cr0.gl.cph.ngdc.net
217.116.255.76	+	te3-3.cr0.gl.cph.ngdc.net

		cr0.taa.cph
217.116.255.26	+	te2-6.cr0.taa.cph.ngdc.net
217.116.255.61	+	vl909.cr0.taa.cph.ngdc.net
213.248.70.10		netgroup-ic-119829-kbn-b4.c.telia.net

		cr1.gl.cph
217.116.255.155	+	te2-1.cr1.gl.cph.ngdc.net
217.116.255.80	+	te2-3.cr1.gl.cph.ngdc.net

		cr1.taa.cph
217.116.255.63	+	ge1-1.cr1.taa.cph.ngdc.net
217.116.255.47	+	ge3-7.cr1.taa.cph.ngdc.net
217.116.255.77	+	te2-3.cr1.taa.cph.ngdc.net
217.116.255.27	+	te2-6.cr1.taa.cph.ngdc.net
217.116.255.29	+	vl904.cr1.taa.cph.ngdc.net
62.242.207.122		cpe.xe-2-2-0.boanqp7.customer.tele.dk

		dr0.ba.cph
217.116.255.40	+	vl950.dr0.ba.cph.ngdc.net
217.116.255.50	+	vl951.dr0.ba.cph.ngdc.net

		dr0.gl.cph
217.116.255.120	+	ge1-29.dr0.gl.cph.ngdc.net
217.116.255.122	+	ge1-30.dr0.gl.cph.ngdc.net
217.116.255.116	+	ge1-31.dr0.gl.cph.ngdc.net
217.116.255.118	+	ge1-32.dr0.gl.cph.ngdc.net

		dr0.taa.cph
83.221.128.172	+	vl1532.dr0.taa.cph.ngdc.net
217.116.253.236	!	vl223.dr0.gl.cph.ngdc.net
217.116.255.56	+	vl931.dr0.taa.cph.ngdc.net
217.116.255.30	+	vl934.dr0.taa.cph.ngdc.net

		dr1.gl.cph
217.116.255.112	+	ge1-29.dr1.gl.cph.ngdc.net
217.116.255.114	+	ge1-30.dr1.gl.cph.ngdc.net
217.116.255.110	+	ge1-31.dr1.gl.cph.ngdc.net
217.116.255.108	+	ge1-32.dr1.gl.cph.ngdc.net

		dr1.taa.cph
217.116.253.237	!	vl223.dr1.gl.cph.ngdc.net
217.116.255.38	+	vl919.dr1.taa.cph.ngdc.net
217.116.255.66	+	vl921.dr1.taa.cph.ngdc.net

		dr2.taa.cph
217.116.255.100	+	ge1-1.dr2.taa.cph.ngdc.net
217.116.255.102	+	ge1-2.dr2.taa.cph.ngdc.net
217.116.255.42	+	ge1-23.dr2.taa.cph.ngdc.net
217.116.255.46	+	ge1-24.dr2.taa.cph.ngdc.net

		dr2.taa.cph
83.221.128.240	!	lo1745.dr2.taa.cph.ngdc.net

		dr3.taa.cph
217.116.255.104	+	ge1-1.dr3.taa.cph.ngdc.net
217.116.255.106	+	ge1-2.dr3.taa.cph.ngdc.net
217.116.255.44	+	ge1-23.dr3.taa.cph.ngdc.net
217.116.255.48	+	ge1-24.dr3.taa.cph.ngdc.net
77.66.18.68	+	vl1714.dr3.taa.cph.ngdc.net

		dr5.taa.cph
217.116.255.98	+	te5-4.dr5.taa.cph.ngdc.net
217.116.255.94	+	te5-5.dr5.taa.cph.ngdc.net

83.221.128.60	~	armada-hosting.cust.ngdc.net
83.221.128.124	~	armada.cust.ngdc.net

83.221.128.109	o	secnet.cust.ngdc.net
77.243.32.174		77-243-32-174.cr1.taas.gc-net.eu

89.186.171.253	o	vrf-exit.tdc.gl.cph.ngdc.net
195.215.109.157		te3-1.alb2nxc7.dk.ip.tdc.net

217.116.238.209	o	dansketelecom.cust.ngdc.net
88.212.126.181		gi2-2-1.1000m.pe-1.glo.net.dansketelecom.com
208.51.41.182		danske-telecom.gigabitethernet3-3.ar3.cph1.gblx.net