[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CENIC (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Wed Mar 8 22:05:44 UTC 2023
IPv4 R&E Routing Table Report 22:05 GMT Wed 08 Mar, 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: 24074
Prefixes after maximum aggregation (per Origin AS): 13480
Deaggregation factor: 1.79
Unique aggregates announced (without unneeded subnets): 16046
Number of IPv4 prefixes with a valid ROA: 9601
Number of IPv4 prefixes with an invalid ROA: 70
Number of IPv4 prefixes with no ROA: 14403
Total ASes present in the Internet Routing Table: 2813
Prefixes per ASN: 8.56
Origin-only ASes present in the Internet Routing Table: 2427
Origin ASes announcing only one prefix: 1078
Transit ASes present in the Internet Routing Table: 386
Transit-only ASes present in the Internet Routing Table: 70
Paths with bogon ASNs present in the IPv4 Routing Table: 3
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 19
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 6
Number of instances of unregistered ASNs: 6
Number of 32-bit ASNs allocated by the RIRs: 41375
Number of 32-bit ASNs visible in the Routing Table: 646
Prefixes from 32-bit ASNs in the Routing Table: 1793
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: 5
Number of addresses announced to Internet: 296908288
Equivalent to 17 /8s, 178 /16s and 118 /24s
Percentage of available address space announced: 8.0
Percentage of allocated address space announced: 8.0
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: 3108
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4700
Total APNIC prefixes after maximum aggregation: 2295
APNIC Deaggregation factor: 2.05
Prefixes being announced from the APNIC address blocks: 4808
Unique aggregates announced from the APNIC address blocks: 2737
APNIC Region origin ASes present in the Internet Routing Table: 576
APNIC Prefixes per ASN: 8.35
APNIC Region origin ASes announcing only one prefix: 249
APNIC Region transit ASes present in the Internet Routing Table: 64
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 224
Number of APNIC addresses announced to Internet: 47363584
Equivalent to 2 /8s, 210 /16s and 182 /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, 131072-151865
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: 13417
Total ARIN prefixes after maximum aggregation: 7554
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 13091
Unique aggregates announced from the ARIN address blocks: 9085
ARIN Region origin ASes present in the Internet Routing Table: 1271
ARIN Prefixes per ASN: 10.30
ARIN Region origin ASes announcing only one prefix: 445
ARIN Region transit ASes present in the Internet Routing Table: 167
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 19
Number of ARIN region 32-bit ASNs visible in the Routing Table: 189
Number of ARIN addresses announced to Internet: 174809088
Equivalent to 10 /8s, 107 /16s and 96 /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: 3560
Total RIPE prefixes after maximum aggregation: 2856
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3778
Unique aggregates announced from the RIPE address blocks: 3143
RIPE Region origin ASes present in the Internet Routing Table: 681
RIPE Prefixes per ASN: 5.55
RIPE Region origin ASes announcing only one prefix: 302
RIPE Region transit ASes present in the Internet Routing Table: 100
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 143
Number of RIPE addresses announced to Internet: 67446784
Equivalent to 4 /8s, 5 /16s and 40 /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
196608-213403
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: 1357
Total LACNIC prefixes after maximum aggregation: 563
LACNIC Deaggregation factor: 2.41
Prefixes being announced from the LACNIC address blocks: 1357
Unique aggregates announced from the LACNIC address blocks: 783
LACNIC Region origin ASes present in the Internet Routing Table: 157
LACNIC Prefixes per ASN: 8.64
LACNIC Region origin ASes announcing only one prefix: 58
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62
Number of LACNIC addresses announced to Internet: 4498944
Equivalent to 0 /8s, 68 /16s and 166 /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: 1034
Total AfriNIC prefixes after maximum aggregation: 206
AfriNIC Deaggregation factor: 5.02
Prefixes being announced from the AfriNIC address blocks: 1035
Unique aggregates announced from the AfriNIC address blocks: 293
AfriNIC Region origin ASes present in the Internet Routing Table: 53
AfriNIC Prefixes per ASN: 19.53
AfriNIC Region origin ASes announcing only one prefix: 24
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28
Number of AfriNIC addresses announced to Internet: 2788352
Equivalent to 0 /8s, 42 /16s and 140 /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 591 2157 463 SINET-AS Research Organization of Infor
7497 435 182 24 CSTNET-AS-AP Computer Network Informati
1237 185 74 134 KREONET-AS-KR KISTI, KR
58647 178 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 329 119 AARNET-AS-AP Australian Academic and Re
4538 130 4192 73 ERX-CERNET-BKB China Education and Rese
55824 119 18 12 NKN-CORE-NW NKN Core Network, IN
4621 70 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
4762 65 4 1 MAHIDOL-BORDER-AS Mahidol 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
16509 3986 4576 1767 AMAZON-02, US
14618 747 3994 555 AMAZON-AES, US
8075 323 12787 277 MICROSOFT-CORP-MSN-AS-BLOCK, US
668 216 702 180 DNIC-AS-00668, US
376 199 178 149 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2152 148 507 91 CSUNET-NW, US
18558 134 18 4 NETBLK-RCOEK, US
81 129 521 32 NCREN, US
270 120 329 85 AS270, 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 1919 249 DFN Verein zur Foerderung eines Deutsch
786 186 1775 183 JANET Jisc Services Limited, GB
8895 136 24 4 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 95 1518 84 SURFNET-NL SURFnet, The Netherlands, NL
2614 94 27 74 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
553 73 449 73 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 158 208 43 Rede Nacional de Ensino e Pesquisa, BR
28391 153 10 67 Universidad Juarez Autonoma de Tabasco,
11340 104 24 47 Red Universitaria Nacional, CL
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
1251 57 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
4270 45 16 1 Red de Interconexion Universitaria, AR
61468 42 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
19611 37 17 2 Associacao Antonio Vieira - Unisinos, B
28571 37 40 18 UNIVERSIDADE DE SAO PAULO, BR
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 248 82 3 KENET-AS, KE
2561 67 4 34 EUN, EG
327687 61 28 3 RENU, UG
8094 48 48 15 PUKNET, ZA
3208 32 2 1 ARN, DZ
37182 32 8 1 TERNET, TZ
327700 31 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37074 13 8 2 UG-AS, GH
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
16509 3986 4576 1767 AMAZON-02, US
14618 747 3994 555 AMAZON-AES, US
2907 591 2157 463 SINET-AS Research Organization of Infor
7497 435 182 24 CSTNET-AS-AP Computer Network Informati
2018 377 319 71 TENET-1, ZA
8075 323 12787 277 MICROSOFT-CORP-MSN-AS-BLOCK, US
680 283 1919 249 DFN Verein zur Foerderung eines Deutsch
36914 248 82 3 KENET-AS, KE
668 216 702 180 DNIC-AS-00668, US
376 199 178 149 RISQ-AS, CA
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 435 411 CSTNET-AS-AP Computer Network Information Cente
2018 377 306 TENET-1, ZA
36914 248 245 KENET-AS, KE
5786 198 197 UPRENET, PR
14618 747 192 AMAZON-AES, US
58647 178 176 KAGAWAU-AS Kagawa University, JP
8895 136 132 ISU Internet Services Unit ISU, SA
18558 134 130 NETBLK-RCOEK, US
2907 591 128 SINET-AS Research Organization of Information a
1916 158 115 Rede Nacional de Ensino e Pesquisa, BR
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
65300 PRIVATE 103.252.172.0/22 133465 DKU-AS-AP Duke Kunshan Unive
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
18621 UNALLOCATED 142.156.0.0/16 26677 ORION-ASN, CA
33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US
19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 2152 CSUNET-NW, US
102.36.194.0/23 Origin: 2018 TENET-1, ZA
102.36.194.0/23 Transit: 11537 INTERNET2-RESEARCH-EDU, US
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
198.135.168.0/24 Origin: 14618 AMAZON-AES, US
198.135.168.0/24 Transit: 16509 AMAZON-02, US
216.169.147.0/24 Origin: 14618 AMAZON-AES, US
216.169.147.0/24 Transit: 16509 AMAZON-02, US
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 /11:9 /12:29
/13:36 /14:82 /15:201 /16:2150 /17:489 /18:488
/19:627 /20:1032 /21:1166 /22:1864 /23:1968 /24:13928
/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
16509 712 3986 AMAZON-02, US
14618 247 747 AMAZON-AES, US
36914 235 248 KENET-AS, KE
8895 131 136 ISU Internet Services Unit ISU, SA
8075 53 323 MICROSOFT-CORP-MSN-AS-BLOCK, US
23024 52 113 OCDE, US
32440 35 56 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
37182 31 32 TERNET, TZ
Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 2:1 3:89 4:2 5:17 6:4
8:2 12:1 13:187 14:89 15:126 16:26
18:176 23:49 24:3 31:7 35:15 37:1
38:9 40:1 41:137 42:10 44:5 45:52
46:11 47:1 49:7 50:10 52:868 54:265
58:2 59:20 60:4 61:3 62:18 63:38
64:147 65:37 66:86 67:65 68:18 69:49
70:27 71:48 72:18 74:84 76:46 77:11
78:4 79:10 80:17 81:28 82:6 83:6
84:8 85:46 86:5 87:2 88:1 89:13
91:55 92:2 93:4 94:8 95:2 96:6
97:2 98:13 99:81 101:6 102:16 103:348
104:116 107:1 108:83 109:12 110:2 111:17
113:4 114:23 115:1 116:8 117:61 118:32
119:21 121:28 122:11 123:8 124:39 125:4
128:86 129:50 130:150 131:74 132:50 133:157
134:101 135:4 136:214 137:106 138:15 139:18
140:55 141:5 142:56 143:40 144:64 145:4
146:134 147:65 148:204 149:16 150:138 151:13
152:148 153:14 154:30 155:76 156:71 157:45
158:43 159:156 160:32 161:36 162:66 163:88
164:22 165:60 166:1 167:25 168:173 169:13
170:135 171:1 172:10 173:22 174:2 175:31
176:13 177:9 178:2 179:11 180:14 181:1
182:1 184:4 185:88 186:3 187:19 188:15
189:3 190:18 191:36 192:1533 193:353 194:136
195:88 196:165 197:151 198:561 199:345 200:218
201:39 202:639 203:440 204:386 205:170 206:209
207:188 208:120 209:144 210:186 211:17 212:175
213:16 214:8 216:167 217:10 218:22 219:6
220:17 222:5 223:4
End of report
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