[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CENIC (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Nov 8 22:05:39 UTC 2023
IPv4 R&E Routing Table Report 22:05 GMT Wed 08 Nov, 2023
IPv4 BGP Table (R&E) as seen at CENIC.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CENIC/
Analysis Summary
----------------
BGP routing table entries examined: 19091
Prefixes after maximum aggregation (per Origin AS): 10987
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 12153
Number of IPv4 prefixes with a valid ROA: 5600
Number of IPv4 prefixes with an invalid ROA: 7
Number of IPv4 prefixes with no ROA: 13484
Total ASes present in the Internet Routing Table: 2757
Prefixes per ASN: 6.92
Origin-only ASes present in the Internet Routing Table: 2377
Origin ASes announcing only one prefix: 1071
Transit ASes present in the Internet Routing Table: 380
Transit-only ASes present in the Internet Routing Table: 69
Paths with bogon ASNs present in the IPv4 Routing Table: 7
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 14
Max AS path prepend of ASN ( 47805) 11
Prefixes from unregistered ASNs in the Routing Table: 16
Number of instances of unregistered ASNs: 16
Number of 32-bit ASNs allocated by the RIRs: 43010
Number of 32-bit ASNs visible in the Routing Table: 631
Prefixes from 32-bit ASNs in the Routing Table: 1923
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 3
Number of addresses announced to Internet: 260300288
Equivalent to 15 /8s, 131 /16s and 222 /24s
Percentage of available address space announced: 7.0
Percentage of allocated address space announced: 7.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 2108
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4632
Total APNIC prefixes after maximum aggregation: 2285
APNIC Deaggregation factor: 2.03
Prefixes being announced from the APNIC address blocks: 4668
Unique aggregates announced from the APNIC address blocks: 2631
APNIC Region origin ASes present in the Internet Routing Table: 539
APNIC Prefixes per ASN: 8.66
APNIC Region origin ASes announcing only one prefix: 229
APNIC Region transit ASes present in the Internet Routing Table: 58
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 204
Number of APNIC addresses announced to Internet: 47079168
Equivalent to 2 /8s, 206 /16s and 95 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-153913
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 8607
Total ARIN prefixes after maximum aggregation: 5210
ARIN Deaggregation factor: 1.65
Prefixes being announced from the ARIN address blocks: 8473
Unique aggregates announced from the ARIN address blocks: 5606
ARIN Region origin ASes present in the Internet Routing Table: 1275
ARIN Prefixes per ASN: 6.65
ARIN Region origin ASes announcing only one prefix: 454
ARIN Region transit ASes present in the Internet Routing Table: 165
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 196
Number of ARIN addresses announced to Internet: 138641920
Equivalent to 8 /8s, 67 /16s and 130 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8,
66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8,
73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8,
99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 3522
Total RIPE prefixes after maximum aggregation: 2814
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3631
Unique aggregates announced from the RIPE address blocks: 2990
RIPE Region origin ASes present in the Internet Routing Table: 686
RIPE Prefixes per ASN: 5.29
RIPE Region origin ASes announcing only one prefix: 306
RIPE Region transit ASes present in the Internet Routing Table: 104
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 147
Number of RIPE addresses announced to Internet: 67298816
Equivalent to 4 /8s, 2 /16s and 230 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 1251
Total LACNIC prefixes after maximum aggregation: 493
LACNIC Deaggregation factor: 2.54
Prefixes being announced from the LACNIC address blocks: 1250
Unique aggregates announced from the LACNIC address blocks: 698
LACNIC Region origin ASes present in the Internet Routing Table: 134
LACNIC Prefixes per ASN: 9.33
LACNIC Region origin ASes announcing only one prefix: 56
LACNIC Region transit ASes present in the Internet Routing Table: 24
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 58
Number of LACNIC addresses announced to Internet: 4421888
Equivalent to 0 /8s, 67 /16s and 121 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1063
Total AfriNIC prefixes after maximum aggregation: 171
AfriNIC Deaggregation factor: 6.22
Prefixes being announced from the AfriNIC address blocks: 1066
Unique aggregates announced from the AfriNIC address blocks: 225
AfriNIC Region origin ASes present in the Internet Routing Table: 50
AfriNIC Prefixes per ASN: 21.32
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26
Number of AfriNIC addresses announced to Internet: 2792448
Equivalent to 0 /8s, 42 /16s and 156 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 593 2162 465 SINET-AS Research Organization of Infor
7497 437 180 23 CSTNET-AS-AP Computer Network Informati
1237 193 74 142 KREONET-AS-KR KISTI, KR
7575 177 329 120 AARNET-AS-AP Australian Academic and Re
58647 177 18 2 KAGAWAU-AS Kagawa University, JP
4538 130 4192 73 ERX-CERNET-BKB China Education and Rese
55824 126 19 17 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 69 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8075 391 12792 330 MICROSOFT-CORP-MSN-AS-BLOCK, US
668 204 652 173 DNIC-AS-00668, US
376 202 178 151 RISQ-AS, CA
5786 191 16 1 UPRENET, PR
2152 143 507 91 CSUNET-NW, US
18558 141 18 4 NETBLK-RCOEK, US
81 127 521 30 NCREN, US
270 118 329 82 AS270, US
23024 112 7 17 OCDE, US
2920 101 34 7 LACOE, US
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 283 1903 249 DFN Verein zur Foerderung eines Deutsch
786 185 1767 182 JANET Jisc Services Limited, GB
8895 132 24 5 ISU Internet Services Unit ISU, SA
559 113 533 105 SWITCH Peering requests: peering at switch
1103 94 1502 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 94 27 74 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
553 76 462 76 BELWUE BelWue-Koordination, DE
1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol
2200 64 599 59 FR-RENATER Reseau National de telecommu
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 209 176 42 Rede Nacional de Ensino e Pesquisa, BR
28391 153 10 67 Universidad Juarez Autonoma de Tabasco,
11340 105 24 49 Red Universitaria Nacional, CL
271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
2715 44 99 34 Fundacao Carlos Chagas Filho de Amparo
61468 43 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
3596 34 4 3 Universidad Autonoma Metropolitana, MX
1251 33 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 377 319 71 TENET-1, ZA
36914 253 82 3 KENET-AS, KE
327687 167 28 3 RENU, UG
8094 48 48 15 PUKNET, ZA
327700 42 16 1 MoRENet, MZ
3208 32 2 1 ARN, DZ
6879 24 2 9 ENSTINET-, EG
37074 14 8 2 UG-AS, GH
37501 11 49 6 UOFS, ZA
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 593 2162 465 SINET-AS Research Organization of Infor
7497 437 180 23 CSTNET-AS-AP Computer Network Informati
8075 391 12792 330 MICROSOFT-CORP-MSN-AS-BLOCK, US
2018 377 319 71 TENET-1, ZA
680 283 1903 249 DFN Verein zur Foerderung eines Deutsch
36914 253 82 3 KENET-AS, KE
1916 209 176 42 Rede Nacional de Ensino e Pesquisa, BR
668 204 652 173 DNIC-AS-00668, US
376 202 178 151 RISQ-AS, CA
1237 193 74 142 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
7497 437 414 CSTNET-AS-AP Computer Network Information Cente
2018 377 306 TENET-1, ZA
36914 253 250 KENET-AS, KE
5786 191 190 UPRENET, PR
58647 177 175 KAGAWAU-AS Kagawa University, JP
1916 209 167 Rede Nacional de Ensino e Pesquisa, BR
327687 167 164 RENU, UG
18558 141 137 NETBLK-RCOEK, US
8895 132 127 ISU Internet Services Unit ISU, SA
55824 126 109 NKN-CORE-NW NKN Core Network, IN
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65208 PRIVATE 63.225.1.0/24 11570 EASTERN-NEW-MEXICO-UNIVERITY
65101 PRIVATE 64.54.9.0/24 5653 UCSF, US
65101 PRIVATE 64.54.18.0/24 5653 UCSF, US
65101 PRIVATE 64.54.196.0/24 5653 UCSF, US
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US
11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
134.208.0.0/16 Origin: 17711 NDHU-TW National Dong Hwa University, TW
134.208.0.0/16 Transit: 7539 TWAREN-TW National Center for High-perfo
192.31.196.0/24 Origin: 112 RESERVED, ZZ
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:4 /11:7 /12:22
/13:29 /14:58 /15:150 /16:2098 /17:453 /18:465
/19:593 /20:890 /21:859 /22:1505 /23:1553 /24:10404
/25:0 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 242 253 KENET-AS, KE
8895 127 132 ISU Internet Services Unit ISU, SA
8075 83 391 MICROSOFT-CORP-MSN-AS-BLOCK, US
23024 51 112 OCDE, US
32440 38 61 LONI, US
327700 36 42 MoRENet, MZ
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 55 SEAP-AGE, ES
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 2:1 4:2 5:16 6:4 8:2
12:1 13:33 14:88 23:8 24:3 31:7
35:6 38:8 40:1 41:118 42:10 44:7
45:47 46:6 47:1 49:9 50:6 52:6
58:1 59:19 60:5 61:3 62:17 63:37
64:54 65:1 66:56 67:46 68:16 69:25
70:2 71:1 72:8 74:51 76:42 77:9
78:3 79:10 80:13 81:25 82:7 83:6
84:7 85:27 86:4 87:1 89:10 91:52
92:4 93:4 94:8 95:2 96:5 97:2
98:2 101:2 102:32 103:278 104:76 108:11
109:9 111:17 113:4 114:23 116:6 117:61
118:32 119:18 121:28 122:8 123:8 124:40
125:4 128:88 129:52 130:86 131:73 132:64
133:152 134:109 135:1 136:190 137:134 138:11
139:5 140:40 141:3 142:42 143:22 144:26
145:4 146:132 147:58 148:193 149:12 150:50
151:12 152:133 153:14 154:29 155:63 156:65
157:19 158:33 159:115 160:34 161:25 162:40
163:83 164:13 165:49 166:1 167:16 168:104
169:8 170:30 171:1 172:3 173:8 175:18
176:9 177:5 178:1 179:11 180:15 181:1
182:1 184:2 185:81 186:3 187:17 188:14
189:3 190:19 191:13 192:1482 193:290 194:137
195:85 196:198 197:167 198:518 199:293 200:278
201:38 202:621 203:417 204:362 205:136 206:193
207:154 208:82 209:116 210:192 211:14 212:164
213:6 214:8 216:92 217:10 218:22 219:5
220:16 222:2 223:14
End of report
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