[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Tue Nov 15 20:10:37 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Tue 15 Nov, 2022
IPv4 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: 6418
Prefixes after maximum aggregation (per Origin AS): 4127
Deaggregation factor: 1.56
Unique aggregates announced (without unneeded subnets): 4476
Number of IPv4 prefixes with a valid ROA: 2454
Number of IPv4 prefixes with an invalid ROA: 5
Number of IPv4 prefixes with no ROA: 3959
Total ASes present in the Internet Routing Table: 1028
Prefixes per ASN: 6.24
Origin-only ASes present in the Internet Routing Table: 867
Origin ASes announcing only one prefix: 432
Transit ASes present in the Internet Routing Table: 161
Transit-only ASes present in the Internet Routing Table: 44
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 15
Max AS path prepend of ASN ( 20537) 9
Prefixes from unregistered ASNs in the Routing Table: 0
Number of instances of unregistered ASNs: 0
Number of 32-bit ASNs allocated by the RIRs: 40617
Number of 32-bit ASNs visible in the Routing Table: 257
Prefixes from 32-bit ASNs in the Routing Table: 665
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: 100716672
Equivalent to 6 /8s, 0 /16s and 208 /24s
Percentage of available address space announced: 2.7
Percentage of allocated address space announced: 2.7
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: 750
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 2845
Total APNIC prefixes after maximum aggregation: 1437
APNIC Deaggregation factor: 1.98
Prefixes being announced from the APNIC address blocks: 2845
Unique aggregates announced from the APNIC address blocks: 1707
APNIC Region origin ASes present in the Internet Routing Table: 380
APNIC Prefixes per ASN: 7.49
APNIC Region origin ASes announcing only one prefix: 161
APNIC Region transit ASes present in the Internet Routing Table: 46
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 125
Number of APNIC addresses announced to Internet: 42306816
Equivalent to 2 /8s, 133 /16s and 141 /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: 69
Total ARIN prefixes after maximum aggregation: 21
ARIN Deaggregation factor: 3.29
Prefixes being announced from the ARIN address blocks: 77
Unique aggregates announced from the ARIN address blocks: 30
ARIN Region origin ASes present in the Internet Routing Table: 11
ARIN Prefixes per ASN: 7.00
ARIN Region origin ASes announcing only one prefix: 5
ARIN Region transit ASes present in the Internet Routing Table: 5
Average ARIN Region AS path length visible: 5.9
Max ARIN Region AS path length visible: 8
Number of ARIN region 32-bit ASNs visible in the Routing Table: 1
Number of ARIN addresses announced to Internet: 524544
Equivalent to 0 /8s, 8 /16s and 1 /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: 3089
Total RIPE prefixes after maximum aggregation: 2612
RIPE Deaggregation factor: 1.18
Prefixes being announced from the RIPE address blocks: 3079
Unique aggregates announced from the RIPE address blocks: 2653
RIPE Region origin ASes present in the Internet Routing Table: 571
RIPE Prefixes per ASN: 5.39
RIPE Region origin ASes announcing only one prefix: 256
RIPE Region transit ASes present in the Internet Routing Table: 88
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 124
Number of RIPE addresses announced to Internet: 57186432
Equivalent to 3 /8s, 104 /16s and 152 /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: 2
Total LACNIC prefixes after maximum aggregation: 2
LACNIC Deaggregation factor: 1.00
Prefixes being announced from the LACNIC address blocks: 2
Unique aggregates announced from the LACNIC address blocks: 2
LACNIC Region origin ASes present in the Internet Routing Table: 2
LACNIC Prefixes per ASN: 1.00
LACNIC Region origin ASes announcing only one prefix: 2
LACNIC Region transit ASes present in the Internet Routing Table: 0
Average LACNIC Region AS path length visible: 6.5
Max LACNIC Region AS path length visible: 8
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 512
Equivalent to 0 /8s, 0 /16s and 2 /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: 413
Total AfriNIC prefixes after maximum aggregation: 55
AfriNIC Deaggregation factor: 7.51
Prefixes being announced from the AfriNIC address blocks: 413
Unique aggregates announced from the AfriNIC address blocks: 82
AfriNIC Region origin ASes present in the Internet Routing Table: 20
AfriNIC Prefixes per ASN: 20.65
AfriNIC Region origin ASes announcing only one prefix: 8
AfriNIC Region transit ASes present in the Internet Routing Table: 7
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 697856
Equivalent to 0 /8s, 10 /16s and 166 /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 217 1983 154 SINET-AS Research Organization of Infor
1237 187 74 135 KREONET-AS-KR KISTI, KR
7575 173 329 121 AARNET-AS-AP Australian Academic and Re
58647 145 16 1 KAGAWAU-AS Kagawa University, JP
4538 109 4160 69 ERX-CERNET-BKB China Education and Rese
4621 74 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
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Su
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
6360 53 62 7 UNIVHAWAII, US
26100 3 1 3 NOAA-PACIFIC-REGION-CENTER, US
112 2 0 2 UNASSIGNED
20144 2 0 1 IMRS, US
36599 2 0 1 SOFTETHER-AMERICA, US
396690 2 0 2 VRSN-AC50-340, US
293 1 16 1 ESNET, US
2534 1 0 1 ROCHE-RSN, US
5663 1 0 1 EDCNET, US
16538 1 0 1 PDC, 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
680 281 1935 249 DFN Verein zur Foerderung eines Deutsch
786 186 1775 183 JANET Jisc Services Limited, GB
559 115 550 106 SWITCH Peering requests: peering at switch
1103 100 1520 87 SURFNET-NL SURFnet, The Netherlands, NL
2614 95 27 75 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
200521 54 4 21 SEAP-AGE, ES
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
10906 1 0 1 Nucleo de Inf. e Coord. do Ponto BR - N
14650 1 0 1 Nucleo de Inf. e Coord. do Ponto BR - N
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
36914 249 82 3 KENET-AS, KE
327687 41 28 3 RENU, UG
327700 34 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37182 20 1 14 TERNET, TZ
37654 10 1 6 RwEdNet-AS, RW
2561 7 0 5 EUN, EG
37215 6 8 1 MAREN, MW
31960 5 1 1 EMUNET, MZ
328813 4 0 1 UCU-AS, UG
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
680 281 1935 249 DFN Verein zur Foerderung eines Deutsch
36914 249 82 3 KENET-AS, KE
2907 217 1983 154 SINET-AS Research Organization of Infor
1237 187 74 135 KREONET-AS-KR KISTI, KR
786 186 1775 183 JANET Jisc Services Limited, GB
7575 173 329 121 AARNET-AS-AP Australian Academic and Re
58647 145 16 1 KAGAWAU-AS Kagawa University, JP
559 115 550 106 SWITCH Peering requests: peering at switch
4538 109 4160 69 ERX-CERNET-BKB China Education and Rese
1103 100 1520 87 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 249 246 KENET-AS, KE
58647 145 144 KAGAWAU-AS Kagawa University, JP
4621 74 64 UNINET-AS-AP UNINET-, TH
9411 66 64 NONTRINET-AS-AP Kasetsart University, Thailand,
4762 65 64 MAHIDOL-BORDER-AS Mahidol University, Thailand,
2907 217 63 SINET-AS Research Organization of Information a
1237 187 52 KREONET-AS-KR KISTI, KR
7575 173 52 AARNET-AS-AP Australian Academic and Research N
23570 59 48 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
38280 50 48 MONASHUNI-MY-AS-AP Monash University Sunway Cam
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
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 /9:0 /10:0 /11:1 /12:10
/13:15 /14:24 /15:99 /16:982 /17:123 /18:103
/19:167 /20:214 /21:319 /22:571 /23:502 /24:3282
/25:3 /26:3 /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 236 249 KENET-AS, KE
200521 31 54 SEAP-AGE, ES
327700 30 34 MoRENet, MZ
31638 21 21 ASN-LEPIDA, IT
37182 20 20 TERNET, TZ
3233 19 29 ICI-ROTLD Romanian National R&D Network, RO
2614 17 95 ROEDUNET, RO
28949 15 15 TUSNET-AS 8, Kliment Ohridski St., BG
60187 14 35 LGFL-AS, GB
5408 13 39 GR-NET www.grnet.gr, GR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:15 24:2 31:7 41:133 44:4
45:9 46:5 49:2 59:19 61:3 62:6
77:7 78:3 79:10 80:9 81:27 82:2
83:6 84:9 85:23 87:1 88:1 89:10
91:35 93:4 94:4 95:4 101:4 102:2
103:193 109:3 110:4 111:16 114:23 116:6
117:61 118:32 119:4 121:15 122:8 123:8
125:1 128:35 129:6 130:5 131:12 132:6
133:146 134:30 136:1 137:25 138:8 140:1
143:6 145:2 146:2 147:8 148:6 150:18
151:2 152:4 153:12 154:5 155:5 156:7
157:2 158:2 159:1 160:25 161:4 163:8
165:38 167:3 168:7 175:18 180:3 182:3
185:36 188:12 192:548 193:258 194:117 195:63
196:17 197:150 199:2 200:2 202:287 203:392
205:2 210:103 211:13 212:40 213:2 217:10
218:3 219:1 220:13 222:2
End of report
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