[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Sun Jan 30 20:10:31 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Sun 30 Jan, 2022
BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17146
Prefixes after maximum aggregation (per Origin AS): 9849
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 11039
Number of IPv4 prefixes with a valid ROA: 3652
Number of IPv4 prefixes with an invalid ROA: 17
Number of IPv4 prefixes with no ROA: 13477
Total ASes present in the Internet Routing Table: 2643
Prefixes per ASN: 6.49
Origin-only ASes present in the Internet Routing Table: 2282
Origin ASes announcing only one prefix: 1061
Transit ASes present in the Internet Routing Table: 361
Transit-only ASes present in the Internet Routing Table: 54
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 14
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 3
Number of instances of unregistered ASNs: 3
Number of 32-bit ASNs allocated by the RIRs: 38452
Number of 32-bit ASNs visible in the Routing Table: 590
Prefixes from 32-bit ASNs in the Routing Table: 1661
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 196764048
Equivalent to 11 /8s, 186 /16s and 97 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 1933
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4044
Total APNIC prefixes after maximum aggregation: 2191
APNIC Deaggregation factor: 1.85
Prefixes being announced from the APNIC address blocks: 4045
Unique aggregates announced from the APNIC address blocks: 2593
APNIC Region origin ASes present in the Internet Routing Table: 565
APNIC Prefixes per ASN: 7.16
APNIC Region origin ASes announcing only one prefix: 248
APNIC Region transit ASes present in the Internet Routing Table: 58
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 220
Number of APNIC addresses announced to Internet: 45150464
Equivalent to 2 /8s, 176 /16s and 241 /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: 7438
Total ARIN prefixes after maximum aggregation: 4147
ARIN Deaggregation factor: 1.79
Prefixes being announced from the ARIN address blocks: 7456
Unique aggregates announced from the ARIN address blocks: 4634
ARIN Region origin ASes present in the Internet Routing Table: 1153
ARIN Prefixes per ASN: 6.47
ARIN Region origin ASes announcing only one prefix: 418
ARIN Region transit ASes present in the Internet Routing Table: 157
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 161
Number of ARIN addresses announced to Internet: 86810480
Equivalent to 5 /8s, 44 /16s and 159 /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: 3410
Total RIPE prefixes after maximum aggregation: 2779
RIPE Deaggregation factor: 1.23
Prefixes being announced from the RIPE address blocks: 3394
Unique aggregates announced from the RIPE address blocks: 2779
RIPE Region origin ASes present in the Internet Routing Table: 673
RIPE Prefixes per ASN: 5.04
RIPE Region origin ASes announcing only one prefix: 318
RIPE Region transit ASes present in the Internet Routing Table: 100
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 134
Number of RIPE addresses announced to Internet: 58142976
Equivalent to 3 /8s, 119 /16s and 49 /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: 1424
Total LACNIC prefixes after maximum aggregation: 566
LACNIC Deaggregation factor: 2.52
Prefixes being announced from the LACNIC address blocks: 1422
Unique aggregates announced from the LACNIC address blocks: 765
LACNIC Region origin ASes present in the Internet Routing Table: 168
LACNIC Prefixes per ASN: 8.46
LACNIC Region origin ASes announcing only one prefix: 71
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: 66
Number of LACNIC addresses announced to Internet: 4154400
Equivalent to 0 /8s, 63 /16s and 100 /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: 827
Total AfriNIC prefixes after maximum aggregation: 163
AfriNIC Deaggregation factor: 5.07
Prefixes being announced from the AfriNIC address blocks: 827
Unique aggregates announced from the AfriNIC address blocks: 266
AfriNIC Region origin ASes present in the Internet Routing Table: 27
AfriNIC Prefixes per ASN: 30.63
AfriNIC Region origin ASes announcing only one prefix: 6
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 6
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2505216
Equivalent to 0 /8s, 38 /16s and 58 /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 571 2157 457 SINET-AS Research Organization of Infor
1237 189 74 135 KREONET-AS-KR KISTI, KR
7575 175 330 122 AARNET-AS-AP Australian Academic and Re
58647 165 18 2 KAGAWAU-AS Kagawa University, JP
55824 130 19 23 NKN-CORE-NW NKN Core Network, IN
4538 112 4160 69 ERX-CERNET-BKB China Education and Rese
4621 80 37 10 UNINET-AS-AP UNINET-, TH
4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
1659 55 1466 35 ERX-TANET-ASN1 Taiwan Academic Network
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7896 251 51 7 NU-AS, US
376 203 178 152 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
2152 144 507 86 CSUNET-NW, US
18558 136 18 4 NETBLK-RCOEK, US
2920 111 34 6 LACOE, US
21976 85 51 18 NJEDGE-NET, US
1736 80 16 1 MU-AS, US
3 77 496 15 MIT-GATEWAYS, US
3477 74 71 43 NOAA-NWAVE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 279 1950 245 DFN Verein zur Foerderung eines Deutsch
786 186 1774 183 JANET Jisc Services Limited, GB
8895 142 24 4 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 98 1520 85 SURFNET-NL SURFnet, The Netherlands, NL
137 82 677 77 ASGARR Consortium GARR, IT
553 72 449 72 BELWUE BelWue-Koordination, DE
2200 67 647 61 FR-RENATER Reseau National de telecommu
2614 58 32 55 ROEDUNET, RO
1930 57 81 52 RCCN Fundacao para a Ciencia e a Tecnol
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 176 207 41 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 95 24 55 Red Universitaria Nacional, CL
1251 65 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
19611 45 17 2 Associacao Antonio Vieira - Unisinos, B
4270 44 16 1 Red de Interconexion Universitaria, AR
61468 40 3 15 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
28571 37 26 15 UNIVERSIDADE DE SAO PAULO, BR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 340 319 74 TENET-1, ZA
36914 198 82 3 KENET-AS, KE
2561 72 5 31 EUN, EG
8094 50 48 4 PUKNET, ZA
327687 36 28 3 RENU, UG
327700 34 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37182 13 8 1 TERNET, TZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 571 2157 457 SINET-AS Research Organization of Infor
2018 340 319 74 TENET-1, ZA
680 279 1950 245 DFN Verein zur Foerderung eines Deutsch
7896 251 51 7 NU-AS, US
376 203 178 152 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
36914 198 82 3 KENET-AS, KE
1237 189 74 135 KREONET-AS-KR KISTI, KR
786 186 1774 183 JANET Jisc Services Limited, GB
1916 176 207 41 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 340 266 TENET-1, ZA
7896 251 244 NU-AS, US
5786 200 199 UPRENET, PR
36914 198 195 KENET-AS, KE
58647 165 163 KAGAWAU-AS Kagawa University, JP
8895 142 138 ISU Internet Services Unit ISU, SA
1916 176 135 Rede Nacional de Ensino e Pesquisa, BR
18558 136 132 NETBLK-RCOEK, US
55824 130 107 NKN-CORE-NW NKN Core Network, IN
2920 111 105 LACOE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US
22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US
19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Transit: 20965 GEANT The GEANT IP Service, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /10:2 /11:1 /12:10
/13:17 /14:31 /15:118 /16:1924 /17:377 /18:423
/19:520 /20:777 /21:817 /22:1328 /23:1388 /24:9333
/25:28 /26:22 /27:28 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 185 198 KENET-AS, KE
8895 137 142 ISU Internet Services Unit ISU, SA
23024 53 56 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
25977 31 45 HCCS, US
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
327700 30 34 MoRENet, MZ
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
32440 29 44 LONI, US
40326 29 33 ECKERD-COLLEGE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:15 8:2 12:1 14:85 18:42
23:9 24:3 31:6 37:6 38:8 40:1
41:110 44:5 45:30 46:6 47:1 49:10
50:1 52:1 59:19 61:3 62:7 63:34
64:47 66:35 67:43 68:8 69:20 71:1
72:10 74:20 76:33 77:7 78:3 79:10
80:16 81:28 82:5 83:6 84:9 85:33
86:4 87:1 88:1 89:10 91:46 92:1
93:19 94:4 95:5 96:5 97:1 98:2
101:4 102:6 103:311 104:14 108:8 109:10
110:3 111:20 112:4 114:23 116:5 117:61
118:32 119:3 121:17 122:8 123:8 125:1
128:81 129:174 130:92 131:83 132:58 133:139
134:95 136:192 137:78 138:8 139:5 140:36
141:2 142:41 143:31 144:52 145:2 146:127
147:57 148:191 149:13 150:40 151:6 152:75
153:11 154:25 155:51 156:67 157:26 158:41
159:19 160:25 161:20 162:19 163:62 164:43
165:55 166:1 167:16 168:109 169:10 170:52
171:1 172:2 173:2 175:30 176:8 177:10
178:1 179:11 180:20 181:1 182:6 184:12
185:39 186:3 187:18 188:13 189:5 190:33
191:33 192:1254 193:246 194:139 195:92 196:147
197:111 198:433 199:240 200:254 201:40 202:566
203:418 204:318 205:164 206:184 207:166 208:59
209:112 210:111 211:13 212:172 213:4 216:86
217:15 218:6 219:7 220:17 222:2
End of report
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