[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Sun Apr 3 20:10:31 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Sun 03 Apr, 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: 17164
Prefixes after maximum aggregation (per Origin AS): 9841
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 11035
Number of IPv4 prefixes with a valid ROA: 3902
Number of IPv4 prefixes with an invalid ROA: 15
Number of IPv4 prefixes with no ROA: 13247
Total ASes present in the Internet Routing Table: 2625
Prefixes per ASN: 6.54
Origin-only ASes present in the Internet Routing Table: 2274
Origin ASes announcing only one prefix: 1047
Transit ASes present in the Internet Routing Table: 351
Transit-only ASes present in the Internet Routing Table: 50
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 15
Max AS path prepend of ASN (211089) 11
Prefixes from unregistered ASNs in the Routing Table: 5
Number of instances of unregistered ASNs: 5
Number of 32-bit ASNs allocated by the RIRs: 38998
Number of 32-bit ASNs visible in the Routing Table: 592
Prefixes from 32-bit ASNs in the Routing Table: 1626
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: 196501648
Equivalent to 11 /8s, 182 /16s and 96 /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: 1862
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3975
Total APNIC prefixes after maximum aggregation: 2145
APNIC Deaggregation factor: 1.85
Prefixes being announced from the APNIC address blocks: 3976
Unique aggregates announced from the APNIC address blocks: 2529
APNIC Region origin ASes present in the Internet Routing Table: 555
APNIC Prefixes per ASN: 7.16
APNIC Region origin ASes announcing only one prefix: 243
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 218
Number of APNIC addresses announced to Internet: 45011712
Equivalent to 2 /8s, 174 /16s and 211 /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: 7461
Total ARIN prefixes after maximum aggregation: 4149
ARIN Deaggregation factor: 1.80
Prefixes being announced from the ARIN address blocks: 7481
Unique aggregates announced from the ARIN address blocks: 4690
ARIN Region origin ASes present in the Internet Routing Table: 1156
ARIN Prefixes per ASN: 6.47
ARIN Region origin ASes announcing only one prefix: 425
ARIN Region transit ASes present in the Internet Routing Table: 154
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: 166
Number of ARIN addresses announced to Internet: 86873232
Equivalent to 5 /8s, 45 /16s and 148 /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: 3474
Total RIPE prefixes after maximum aggregation: 2819
RIPE Deaggregation factor: 1.23
Prefixes being announced from the RIPE address blocks: 3458
Unique aggregates announced from the RIPE address blocks: 2793
RIPE Region origin ASes present in the Internet Routing Table: 668
RIPE Prefixes per ASN: 5.18
RIPE Region origin ASes announcing only one prefix: 305
RIPE Region transit ASes present in the Internet Routing Table: 97
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 15
Number of RIPE region 32-bit ASNs visible in the Routing Table: 133
Number of RIPE addresses announced to Internet: 58000128
Equivalent to 3 /8s, 117 /16s and 3 /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: 1396
Total LACNIC prefixes after maximum aggregation: 563
LACNIC Deaggregation factor: 2.48
Prefixes being announced from the LACNIC address blocks: 1394
Unique aggregates announced from the LACNIC address blocks: 765
LACNIC Region origin ASes present in the Internet Routing Table: 167
LACNIC Prefixes per ASN: 8.35
LACNIC Region origin ASes announcing only one prefix: 69
LACNIC Region transit ASes present in the Internet Routing Table: 22
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: 4146176
Equivalent to 0 /8s, 63 /16s and 68 /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: 853
Total AfriNIC prefixes after maximum aggregation: 160
AfriNIC Deaggregation factor: 5.33
Prefixes being announced from the AfriNIC address blocks: 853
Unique aggregates announced from the AfriNIC address blocks: 256
AfriNIC Region origin ASes present in the Internet Routing Table: 24
AfriNIC Prefixes per ASN: 35.54
AfriNIC Region origin ASes announcing only one prefix: 5
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: 10
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2469888
Equivalent to 0 /8s, 37 /16s and 176 /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 578 2084 455 SINET-AS Research Organization of Infor
1237 186 74 135 KREONET-AS-KR KISTI, KR
7575 176 330 123 AARNET-AS-AP Australian Academic and Re
58647 167 18 2 KAGAWAU-AS Kagawa University, JP
55824 114 18 11 NKN-CORE-NW NKN Core Network, IN
4538 110 4159 68 ERX-CERNET-BKB China Education and Rese
4621 79 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 252 51 7 NU-AS, US
376 202 178 151 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
2152 147 507 88 CSUNET-NW, US
18558 135 18 4 NETBLK-RCOEK, US
23024 114 7 17 OCDE, US
2920 108 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
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 1967 245 DFN Verein zur Foerderung eines Deutsch
786 186 1774 183 JANET Jisc Services Limited, GB
8895 138 24 4 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 99 1520 86 SURFNET-NL SURFnet, The Netherlands, NL
2614 96 27 76 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
553 73 449 73 BELWUE BelWue-Koordination, DE
2200 66 647 61 FR-RENATER Reseau National de telecommu
1930 58 81 53 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 158 208 45 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 94 24 54 Red Universitaria Nacional, CL
1251 60 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 43 16 1 Red de Interconexion Universitaria, AR
61468 41 3 15 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA
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 375 319 74 TENET-1, ZA
36914 204 82 3 KENET-AS, KE
2561 67 4 32 EUN, EG
8094 50 48 4 PUKNET, ZA
327687 37 28 3 RENU, UG
327700 35 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37215 7 8 1 MAREN, MW
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 578 2084 455 SINET-AS Research Organization of Infor
2018 375 319 74 TENET-1, ZA
680 279 1967 245 DFN Verein zur Foerderung eines Deutsch
7896 252 51 7 NU-AS, US
36914 204 82 3 KENET-AS, KE
376 202 178 151 RISQ-AS, CA
5786 200 16 1 UPRENET, PR
786 186 1774 183 JANET Jisc Services Limited, GB
1237 186 74 135 KREONET-AS-KR KISTI, KR
7575 176 330 123 AARNET-AS-AP Australian Academic and Re
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 375 301 TENET-1, ZA
7896 252 245 NU-AS, US
36914 204 201 KENET-AS, KE
5786 200 199 UPRENET, PR
58647 167 165 KAGAWAU-AS Kagawa University, JP
8895 138 134 ISU Internet Services Unit ISU, SA
18558 135 131 NETBLK-RCOEK, US
1916 158 113 Rede Nacional de Ensino e Pesquisa, BR
55824 114 103 NKN-CORE-NW NKN Core Network, IN
2920 108 102 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
395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, 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 /15:117 /16:1925 /17:382 /18:425
/19:514 /20:782 /21:804 /22:1335 /23:1403 /24:9409
/25:3 /26:2 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 191 204 KENET-AS, KE
8895 133 138 ISU Internet Services Unit ISU, SA
23024 53 114 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
25977 31 45 HCCS, US
327700 31 35 MoRENet, MZ
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
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 14:84 18:42
23:9 24:3 31:6 37:6 38:9 40:1
41:102 44:5 45:30 46:6 47:1 49:10
50:1 52:1 59:19 61:3 62:7 63:34
64:49 66:35 67:42 68:8 69:19 70:2
71:1 72:9 74:20 76:33 77:7 78:3
79:10 80:15 81:28 82:5 83:6 84:9
85:38 86:4 87:1 88:1 89:10 91:44
93:23 94:4 95:5 96:5 97:1 98:2
101:4 102:6 103:306 104:75 108:8 109:10
110:3 111:20 114:23 116:5 117:61 118:32
119:3 121:17 122:8 123:8 125:1 128:80
129:176 130:93 131:83 132:58 133:140 134:92
136:193 137:87 138:8 139:5 140:37 141:1
142:41 143:31 144:50 145:2 146:127 147:56
148:191 149:12 150:42 151:6 152:75 153:13
154:26 155:51 156:68 157:26 158:42 159:19
160:25 161:21 162:19 163:62 164:18 165:55
166:1 167:16 168:124 169:10 170:52 171:1
172:2 173:5 175:28 176:8 177:12 179:9
180:20 182:6 184:5 185:35 186:3 187:19
188:13 189:5 190:33 191:33 192:1253 193:303
194:140 195:81 196:161 197:116 198:441 199:246
200:245 201:39 202:558 203:417 204:319 205:161
206:184 207:166 208:66 209:111 210:109 211:15
212:149 213:5 216:85 217:11 218:3 219:7
220:16 222:2
End of report
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